PCS Electronics CyberMaxFM+ DSP/RDS User Manual

Download

Brought to you by PCS Electronics, www.pcs-electronics.com

CyberMaxFM+ DSP/RDS

High performance FM radio broadcasting exciter Covers 150W, 300W, 500W and 750W models, silver and black front panel

Manual

Brought to you by PCS Electronics, www.pcs-electronics.com

I M P O R T A N T N O T E

- Upon receiving your order inspect the packaging material and unit for apparent damage. Any damage should be reported immediately so we can make a claim with the shipping company. Take photos, if you can, they can be used as a proof.

- Mains cable is typically not included with our mains power supplies and units. Since these cables vary from country to country and we had trouble finding the exact type we decided against including them, especially since finding them is so easy and cheap locally. They can be obtained in any radio/computer/hardware shop at the cost of about 1 US$. It is the type used in your PC for mains power.

- Study local regulations and ensure you are always operating in compliance.

- Do not open the unit or attempt service yourself. Deadly mains voltage is present inside. There are also high RF voltage points that can cause burns and discomfort if touched.

- If you are using ¾ Exterminator antenna make sure you first extend all the telescopic tubes all the way to black marker ring. This ring has been drawn during the tune-up procedure. Also verify SWR with SWR meter as transport or installation can affect resonant frequency slightly.

- Finally, never ever operate any transmitter or amplifier without a properly tuned antenna!

Brought to you by PCS Electronics, www.pcs-electronics.com

TABLE OF CONTENTS

INTRODUCING CYBERMAXFM+ SERIES OF TRANSMITTERS................................ .......................... 5

WHAT MAKES THIS FM TRANSMITTER SERIES SO GREAT?................................................................................. 5

GENERAL FEATURES ....................................................................................................................................... 5

TECHNICAL SPECIFICATIONS ........................................................................................................................... 6

THANK YOU FOR PURCHASING CYBERMAXFM+ TRANSMITTER........................................................................ 6

FRONT AND BACK PANEL LAYOUT ................................................................ ....................................... 7

WHAT’S INSIDE THE BOX? ................................................................ ....................................................... 9

FM EXCITER BOARD..................................................................................................................................... 10

STEREO ENCODER BOARD.............................................................................................................................. 12

RDS ENCODER BOARD .................................................................................................................................. 13

WHERE CAN I FIND MORE INFO? .................................................................................................................... 13

BEFORE YOU START ................................................................................................................................ 14

ANTENNA..................................................................................................................................................... 14

SO WHAT IS THIS SWR (VSWR) EVERYONE TALKS ABOUT?........................................................................... 15

COAXIAL CABLE ........................................................................................................................................... 15

MAINS POWER SUPPLY AND MAINS POWER CABLE .......................................................................................... 15

AUDIO SOURCE WITH MI XER, MICROPHONE ETC ............................................................................................. 15

WIRING EVERYTHING TOGETHER ...................................................................................................... 16

WIRING THINGS UP AND FIRST POWER-UP....................................................................................................... 16

USING THE CYBERMAXFM+ SERIES TRANSMITTER....................................................................... 17

LCD CONTROL MODULE MENU SYSTEM: POWER AND DSP FUNCTIONS ............................................................ 17

CHANGING FREQUENCY ................................................................................................................................ 17

<RF POWER>............................................................................................................................................. 17

<STEREO MODE>..................................................................................................................................... 17

<VIEW SELECT>....................................................................................................................................... 18

<TREBLE> AND <BASS> (ONLY WITH DSP STEREO ENCODERS).................................................................. 18

COMPRESSOR SETTINGS (ONLY WITH DSP STEREO ENCODERS)....................................................................... 18

<LCD CONTRAST>................................................................................................................................... 19

LEFT AND RIGHT CHANNEL VOLUME (ONLY WITH DSP STEREO ENCODERS)..................................................... 19

<PLL STEP>............................................................................................................................................... 20

<FIRMWARE VER> .................................................................................................................................. 20

<CURRENT ALARM> ............................................................................................................................... 20

<TEMP ALARM>....................................................................................................................................... 20

<SWR ALARM>......................................................................................................................................... 20

<U AMP ALARM>..................................................................................................................................... 20

<BAND SELECT>...................................................................................................................................... 20

<RF AMP CONTROL>............................................................................................................................... 20

<RF POWER ALC> .................................................................................................................................... 21

DESCRIPTION OF WINDOWS CONTROL PROGRAM................................ ......................................... 22

SETUP .......................................................................................................................................................... 22

FM TX MAIN ............................................................................................................................................... 23

FM TX ALARMS........................................................................................................................................... 25

PI, PTY... .................................................................................................................................................... 26

PS0.............................................................................................................................................................. 27

PS1.............................................................................................................................................................. 28

PS2.............................................................................................................................................................. 28

TIME, MSG................................................................................................................................................. 29

AUTO PS, RT... .......................................................................................................................................... 30

ABOUT......................................................................................................................................................... 31

Brought to you by PCS Electronics, www.pcs-electronics.com

COMMON CONTROLS..................................................................................................................................... 32

SCHEDULER.................................................................................................................................................. 33

TROUBLESHOOTING ................................................................ ............................................................... 35

APPENDIX A: DIY ANTENNA AND IMPROVEMENT TIPS ................................................................ . 37

SIMPLE GP ANTENNA DESIGN........................................................................................................................ 37

SOME MORE IMPROVEMENT TIPS.................................................................................................................... 37

APPENDIX B: GENERAL TIPS FOR SETTING UP TRANSMITTERS ................................................. 38

TYPICAL FM TRANSMITTER SET UPS .............................................................................................................. 38

TYPICAL FM BROADCASTING ANTENNA SETUPS............................................................................................. 39

WIRING ANTENNAS IN MULTI-BAY CONFIGURATIONS ..................................................................................... 40

APPENDIX C – ATTACHING EXTERNAL STEREO PROCESSOR...................................................... 41

APPENDIX D – PC REMOTE CONTROL VIA USB AND RS232............................................................ 42

SOFTWARE INSTALLATION ............................................................................................................................ 42

CONFIGURING COMMUNICATIONS PORT ......................................................................................................... 43

INSTALLING USB DRIVER (ONLY FOR USB IO BOARD) .................................................................................. 43

CONFIGURING USB DRIVER .......................................................................................................................... 43

APPENDIX E – SETTING UP REMOTE CONTROL VIA ETHERNET ................................................. 45

SOFTWARE INSTALLATION ............................................................................................................................ 45

APPENDIX F: WHAT IS RDS?................................................................ ................................................... 48

APPENDIX G – WARRANTY AND LEGAL INFO................................................................................... 58

IMPORTANT NOTICE!..................................................................................................................................... 58

WARRANTY AND SERVICING! ........................................................................................................................ 58

LEGAL INFO.................................................................................................................................................. 58

LIMITATION OF LIABILITY ............................................................................................................................. 58

ALSO AVAILABLE FROM WWW.PCS-ELECTRONICS.COM............................................................. 59

REVISIONS AND ERRATA................................ ........................................................................................ 60

INDEX................................ ........................................................................................................................... 60

Brought to you by PCS Electronics, www.pcs-electronics.com

Introducing CYBERMAXFM+ series of transmitters

Our series of rack mounted stereo FM radio transmitters with optional RDS and DSP processing

his manual covers our 150W/300W/500W and 750W CYBERMAXFM+ transmitters. Even though the design of these units evolved radically over the years transmitters from this series remain one of our best selling items. Today our customers still enjoy the incredible price/performance ratio and more reliability, power and features than ever before. In this manual you’ll find all of this products little secrets.

Please note that while these transmitters are all based on the same technology some may have a different mains power supply and different amplifier module, but they are internally almost identical.

What makes this FM transmitter series so great?

Besides offering all the standard basic features these units also display a number of useful parameters on the LCD display: transmitted power, reflected power, exciter temperature, exciter voltage, frequency, audio modulation level, amplifier voltage, and amplifier temperature. They are available in mono (MPX input) and stereo (with regular or DSP stereo encoder). RDS (Radio Data System) option is also available. Of course this unit is completely no-tune and works from any mains voltage (110-240V 50/60Hz) available worldwide.

Comfortably sized 2H 19" rack enclosure offers easy access to all internal components and assures good ventilation. A number of protection circuits helps prevent disasters. Temperature and SWR are monitored by on-board computer and alarm threshold can be set via LCD module. Hardware fold back SWR protection is also built-in as a backup. Unit is rugged and made for 24/7/365 operation. In our opinion it gives the best quality/price ratio possible.

General features

- True wideband no-tune operation (no tuning required to make it work, just set the frequency and desired output power)

- Covering entire FM broadcasting band with clean signal and great sounding audio

- Built-in SWR and TEMP protection for peace of mind

- High power (150W/300W/500W/750W depending on the model)

- Digital output power adjustment (with up/down keys and LCD display)

- Both DSP and analog models have extremely sharp audio filters

- DSP model offers complete control over audio parameters via LCD menu system

- Optional high-performance RDS encoder with scrolling PS and many other features.

Chapter

Brought to you by PCS Electronics, www.pcs-electronics.com

Technical specifications

RF section:

- Frequency range: 87.5-108MHz

- RF Output Power: 0 to full (digitally adjustable with UP/DOWN keys or remotely via PC)

- Output connector: N female (50-750W models)

- Output Impedance: 50 Ohms

- PLL steps: 5KHz (10/25/50/100/200KHz adjustable via LCD)

- Frequency stability: +/- 20Hz

- Spurious/Harmonic rejection: Harmonics: >50dB, Spurious: -90dB

- RF output ruggedness: SWR protection, TEMP protection, reduced power with LCD warning and RED LED

- Quartz locked PLL frequency control, ultra stable & clean output

- S/N ratio: >90 dB

- No expensive test equipment required to setup

Audio section:

- Audio performance: Less than 0.2% distortion, 20Hz-75KHz

- Pre-emphasis, 50uS, 75uS or none selectable

- Audio Input Level: 0 dB

- Stereo separation: > 50dB

- Audio low pass filter with 19KHz notch filter: Yes, all models

- Audio input impedance: 10Kohms balanced, 1Kohms unbalanced

- Limiter: Yes, all models

- Pre-emphasis: Yes, precision 50uS, 75uS or none for all models

- DSP: Yes, in DSP models

General:

- Mains power: 110-240V/50-60Hz, universal worldwide, IEC male at the back (cable typically not included)

- LCD display shows: Power, reflected power, frequency, temperature, supply voltage, modulation level and uptime counter

- Ambient temperature: -10C° to +40°C, air conditioning in transmitter room strongly advisable for long life

- External dimensions: 150W-300W ( W x D x H ) 19" x depth (315mm) x height 2HE (88mm), ~6Kg

- External dimensions: 500W-750W ( W x D x H ) 19" x depth (~370mm) x height 2HE (88mm), ~10Kg

Thank you for purchasing CyberMaxFM+ transmitter

We hope you will enjoy it as much as we do and if you do remember to tell your friends and colleagues about it. Please feel free to leave your comments at our website or post your experience in our forum. And if you encounter a problem please let us know so that we may improve our products, offer advice and suggestion. From all of us we wish you happy broadcasting!

Your PCS Electronics team

Brought to you by PCS Electronics, www.pcs-electronics.com

Front and back panel layout

Fig. 1: Front panel

Reference Function

1 Three push buttons, the UP, DOWN and MENU keys.

2 LCD display that lets you control the unit and monitor various parameters.

3 The green led. Green signals power is ON.

4 Red error led. Turns on while VCO is tuning into selected frequency and in case of SWR or TEMP error.

5 Power switch in the middle of the panel is actually a standby switch. To really fully disconnect the unit

from mains power use the main switch at the back.

6 Monitor output at the front provides a small sample of the transmitter signal, this can be used to attach

frequency counter, modulation index monitor, spectrum analyzer or similar equipment.

Chapter

Brought to you by PCS Electronics, www.pcs-electronics.com

Fig. 2: Back panel

Reference Function

1 Mains power, universal input 110-240V, IEC jack (same as for PC)

2 Fuse and main mains switch (total off)

3 Ventilation aperture

4 Antenna connector, N female. Do not operate without antenna.

5 BNC connectors for MPXin, MPXout and 19KHz pilot.

6 RS232/USB for controlling your RDS encoder and FM transmitter.

7 Audio inputs, RCA jacks for left and right channel

8 STEREO mode indicator.

9, 10 Balanced audio inputs, left and right channel XLR (Canon)

11 Ethernet (optional) port for controlling/monitoring RDS and FM transmitter.

Brought to you by PCS Electronics, www.pcs-electronics.com

What’s inside the box?

CyberMaxFM+ transmitters are available in several configurations. Exact internal configuration depends on the particular model. Since we sometimes change configurations it is best to check our website for latest information. Below are the basic building blocks of the exciter. Note that the RDS encoder is optional and only available in models with RDS capability. Similarly DSP encoder is only available in DSP capable models. We are now going to have a look at these building blocks.

Fig. 3: Block diagram of the CyberMaxFM+ transmitter

Reference Function

1 Mains power supply, universal input 110-240V, IEC jack (same as for PC)

2 DC/DC converter from 48V down to 12V for stereo encoder, FM exciter and fans

3 Stereo encoder with optional RDS

4 FM exciter module, “the brains” of the transmitter

5 FM amplifier module

6 Filter with SWR/PWR sensor, temperature sensor, voltage sensor and current sensor

7, 8 Digiamp and Maxlink interconnect cables for controlling stereo and amplifier.

9 Various fans, there are usually at least two (one for amplifier, one for exciter + stereo)

10 RS232/USB/Ethernet for controlling your RDS encoder and FM transmitter.

Chapter

Brought to you by PCS Electronics, www.pcs-electronics.com

FM Exciter board

CyberMaxFM+ units are all based on our MAXPRO5000+ series FM exciters, note the current revision may differ slightly from the board in your transmitter as we are constantly fine-tuning the design and making it better.

Fig. 4: MAX PRO 5000 series + RF board layout

Brought to you by PCS Electronics, www.pcs-electronics.com

Ref. Function

A Connect ON/OFF switch here, but you can also just install a jumper. A LED diode can also be connected as

shown on the image; series resistor is on board and is not necessary.

B Output stage bias current. DO NOT change this setting. (Does not exist on new 5015 boards)

C You can connect external TCXO (thermally stabilized reference oscillator). Frequency needs to be 18MHz, TTL.

You will probably have to remove nearby quartz crystal, if you want to use this input.

D Optional ERROR indicator LED can be connected here. This LED is activated when RF output stage is NOT

active. For example, whenever temperature protection is activated, this LED illuminates and RF power is reduced. This LED is also located on the LCD control module. Important: This LED is also illuminated whenever you change frequency as the control unit turns RF power off until PLL/VCO tuning is finished. In such case this does not signal a problem with temperature or SWR.

E Pre-emphasis. Use this jumper to set pre-emphasis. This can either be 50uS (EU and most of the world) or 75uS

(USA). If you plan to connect stereo encoder to the MAXPRO5015+ board, place the jumper in position None (top - this disables pre-emphasis).

F Power adjustment jumper. Remove this jumper if you want to control power via LCD module. To set output

power via external control voltage (0-5V) apply voltage to header V (J6).

G Audio input sensitivity adjustment.

H Audio input - coaxial cable or 2-pin header.

I Digiamp connector enables easy control of RF amplifiers and mains power supplies that power them. This greatly

simplifies the process of building FM transmitters. You can read more about this connector in appendix.

@ Internal power meter accuracy adjustment. If the internal power display on the LCD is a bit off you can correct its

accuracy with this trimmer, the range of adjustment is very small.

K RF monitor output. This output contains a small sample of output signal, suitable for monitoring RF signal

quality with instruments such as frequency meter, frequency analyzer or modulation monitor.

L You can connect VUMAX-1 led vu-meter unit here, it will show output power and SWR as bar graphs. The 2

remaining bar graphs can be connected to SE5000 DSP+ and will show audio volume.

M Soldering posts for a small 12V fan. Output stage appreciates a bit of air flow, it does not have to be substantial.

As long as the air slowly moves a bit it'll be more than enough so use weakest available FAN. Due to improved design this fan now spins down completely at low RF power output and our new 40x40x25mm unit is almost completely inaudible even at highest speed.

N Maxlink connector for easy connection with the SE5000 or SE3000 stereo encoder. This lets you connect and

control both units from the same LCD control units. Our Cyber Max FM+ units use this arrangement. This connection is now completely solder-free, just plug the connector in and voila, finished. Flat cable that runs between the units also carries supply voltage for the stereo encoder further reducing required wiring and work.

O LCD control unit, attach your LCD control module here.

P Power supply connector, center is positive. DO NOT use more than 15V.

Q Do not touch unless you understand what this is. Lets you fine-tune the reference frequency. Can be used to set

the unit to any frequency, even though the PLL step is 5KHz. You can for example use this to set the frequency to 100.001KHz by first using the LCD to set it to 100.000KHz and than using this trimmer to shift it to

100.001.000Hz.

R RF output connection. BNC jack. Use a properly matched FM band antenna. The range and success of your

transmissions will depend primarily upon the quality and position of your antenna so invest your energy and money into a proper solution. Poor unreliable connections may damage the final transistor.

S 15W - 2.5A fast, 25W 4A fast and 40W – 6.3A fast fuse. Always replace with this type for continued protection

against short-circuit.

Brought to you by PCS Electronics, www.pcs-electronics.com

T Telemetry connector. All vital signals are available on this 10-pin connector. You can connect a 10-pin connector

at the back of the transmitter and use them to supervise status of the transmitter.

V External control voltage for power adjustment, only works when jumper J5 (F) is removed. Apply external

control voltage (0-5V).

X External power and SWR signal, only use if you are not using digiamp connector (I)

Y Increases sensitivity of external power and SWR meter.

1 Power limit jumper J12, use to limit output power to 2, 4, 6 or 8W (exact value depends on the model)

Description of various elements of the MAX PRO 5015+ FM exciter board

The block diagram of the MAXPRO5000+ series exciter is shown below. It is simplified as the actual block diagram would be too complex for this manual.

Fig. 5: Block diagram of the MAXPRO5000+ series FM exciter

Stereo encoder board

CyberMaxFM+ units utilize our SE5000 DSP+ (DSP model) or SE2000D+ stereo encoders (analog model)

Brought to you by PCS Electronics, www.pcs-electronics.com

Fig. 6: SE5000 DSP+ stereo encoder board layout

RDS encoder board

CyberMaxFM+ units utilize our RDS MAX 4000+ and RDSMAX4000+ mini RDS encoders

Fig. 7: RDSMAX4000+ rds encoder board layout

Where can I find more info?

Separate extensive manuals for all of the built-in components are available on our website. We have a section in our forum dedicated to all of the manuals and you can discuss each of the manuals with other forum members here:

http://www.pcs-electronics.com/phpBB2/viewforum.php?f=33

Ref Function

J1-2 Audio Inputs

J3-4 Pre-emphasis selection

J7 MPX out, going to FM exciter audio input

J10 Mode select, don’t install in this configuration

J11 Maxlink 6-pin cable going to MAX PRO 3000+

exciter

J12 Install to reduce pilot level slightly

J14 Stereo/mono selection, do not install jumper here

Ref Function

P1 RDS level

P2 RDS carrier phase relationship to stereo pilot

J11-13 Baud speed selection, leave at default

CLK RDS clock led, should blink at around 1Hz

57KHz PLL lock led, should be off in stereo mode

Brought to you by PCS Electronics, www.pcs-electronics.com

Before you start

It is recommended that you read this section before you power your unit up for the first time. Let us clear up some basics you should know about. You will also find some useful tips in our guides and forum at http://www.pcs-electronics.com. Here is what you need to get your FM transmitter on the air:

Antenna

Preferred type of antenna is affected by several factors, but mostly by desired radiation pattern, space available and your budget. If you are located in the middle of the area you want to cover you'll need an omni-directional antenna which transmits equally in all directions. If you are located at the edge of your desired coverage area you can beam the signal into the target area with a directional antenna. Directional antennas are also practical for point-to-point communications. Another thing to consider is that directional antennas usually have much higher gain than omni-directional antennas since the power which is radiated in all directions with omni antenna is concentrated mainly into one direction with directional antenna. Antennas with more gain thus have narrower beam. A compromise is usually made depending on budget and space available, higher gain antennas are often bigger and often more expensive.

Once you’ve chosen and installed your antenna there is another thing to consider. You can read more about it in the next section (So what is this SWR everyone talks about). Before powering up your transmitter on the air you should tune your antenna to get minimal SWR. This is typically done by adjusting the position of the antenna and any adjustable pieces. Aim for 2:1 or less. Use low power into the antenna when tuning it up and making adjustments. If you were using full power and a bit of the antenna came off in your hand the VSWR could be so bad as to blow the final transistor. For the same reason check the DC continuity of the antenna with an ohmmeter before plugging it in, to be sure it's what it's meant to be, either a short circuit or an open one, depending on the antenna type. Note you won’t be reading 50 ohms with regular ohm-meter. For instructions regarding construction of antennas please see our website: http://www.pcs-electronics.com (guides section - antennas).

Antenna is a crucial part of the system so take special care. It is usually a good idea to place antenna away from your transmitter, power supply and audio system. Also any transmitter should be in a metal case which shields circuitry from the radiation of the antenna. If you cannot meet these requirements, you could experience feedback and other RF problems. We cannot guarantee proper operation of any transmitter/amplifier unless suitable antenna system is used and transmitters are in ventilated metal enclosure! This applies to any transmitter. Interestingly, strong RF field can make CD players and other digital devices go crazy. Try placing antenna next to yours and see what happens. Most of the modern audio gear is not RF shielded – reducing costs is unfortunately the mantra today. This is why keeping antenna away from audio gear is a good idea, too.

If you are going to place your antenna outside, on your roof, please take care of the grounding. This should be done to prevent lightning hazard and should be done by a company specializing in lightning protection. You can read more about lightning protection in the book recommended below or many of the websites (Google up “lightning protection ham radio” for example).

I hope this basic introduction will not scare you too much, it should be sufficient for the time being although we encourage you to explore this exciting subject further with the help of a book such as the ARRL Antenna Book:

http://www.amazon.com/exec/obidos/ASIN/0872598047/mightyspiraterad

Chapter

Brought to you by PCS Electronics, www.pcs-electronics.com

So what is this SWR (VSWR) everyone talks about?

SWR is a measure of how well two devices are impedance matched to each other. Typical radio/TV transmission equipment is designed for 50 ohm load impedance, so we usually use 50 ohm cables and build or buy antennas that are specified for 50 ohm. While most cables have flat impedance over frequency (they measure 50 ohm at all frequencies you are likely to use) the same is not true of the antennas.

A 1.0:1 VSWR is a perfect match. That means the load impedance is exactly 50 ohms. A 2.0:1 VSWR is obtained when the load impedance is either 25 ohms or 100 ohms.

Because most transmitters will deliver full power with a load VSWR of up to 2.0:1, this value is usually considered the limit for acceptable operation. Many prefer to keep their VSWR below that however, but for all practical purposes, it is unnecessary to spend time or money trying to get much below a VSWR of 1.5:1. The benefits will be hard to measure and even harder to notice.

On the other hand, coaxial cable losses increase rapidly, for a given frequency of operation, when the antenna VSWR exceeds 2.0:1. This can even, in some extreme cases, result in the coaxial cable burning, even when running 100 W. Using a higher grade of cable will definitely improve things, but even high quality coaxial cable becomes very lossy when VSWR exceeds 3.0:1 at higher HF frequencies (or VHF and higher).

Coaxial cable

Coaxial cable is an electrical cable consisting of a round, insulated conducting wire surrounded by a round, conducting sheath, usually surrounded by a final insulating layer. The cable is designed to carry a high-frequency or broadband signal, usually at radio frequencies. Coaxial Cabling is a two conductor closed transmission medium that is often used for the transmission of RF energy. It yields excellent performance at high frequencies and superior EMI control/shielding when compared to other types of copper cabling. Coaxial cabling is commonly found in broadcast and networking systems. Most coaxial cables have a characteristic impedance of either 50 or 75 ohms. The RF industry uses standard type-names for coaxial cables. The U.S military uses the RG-# or RG-#/U format (probably for "radio grade, universal", but other interpretations exist).

The common RG-58 from Radio Shack is NOT the best you can do and can eat a lot of your effective power out! Use it only for short runs. BELDEN makes terrific coaxial cable in various qualities and with very low loss (measured in dB’s…decibels). 3 dB loss = 1/4 of your signal strength - either lost or gained. Watch out for the correct impedance; RG58, RG213, H-500 and H-155 have 50 Ohms, RG-59 and RG-6 have 75 Ohms. Most antennas and transmitters including ours are 50 ohm. Check our website for good coax. Don't buy more than you need to make the long run to your antenna and don't make up a few "jumpers" to go between your exciter, VSWR meter and your antenna as all you'll do is create higher SWR and more line losses. H-155 or H500 are good choices! RG-142 with Teflon is recommended for wiring inside cabinets, for baluns, Wilkinson couplers and everywhere where resistance to heat is required as insulation won’t melt during soldering or operation.

Mains power supply and mains power cable

Do not underestimate the importance of mains power supply, despite abundance of all kinds of cheap units available today they unfortunately do not always meet requirements. What you need is a well stabilized DC 15V mains power supply that can supply at least 2 amps (15W) or more depending on the model (see specifications) of continuous current without overheating, introducing buzzing, dropping the voltage down to 12V or lower (a classic case) or acting up in other way. Whenever in doubt please buy our mains power supply. One final note, if you use less than 15V this effectively lowers your output power. The lower the supply voltage the lower the power.

If you ordered and received our mains power supply (which is recommended) you’ll notice the mains cable is not included, but can be obtained in any radio/computer/hardware shop at the cost of about 1 US$. It is the type used in your PC for mains power. Since these cables vary from country to country and we had trouble getting the exact type locally we decided against including them, especially since finding them is so easy locally.

Audio source with mixer, microphone etc

You need some kind of audio source to drive your transmitter. This will typically be either a computer (just plug the cable into your sound card outputs, a mixer and a variety of audio sources, such as a microphone, CD player, DAT player, tape deck, gramophone, MP3 player etc.

Brought to you by PCS Electronics, www.pcs-electronics.com

Wiring everything together

Wiring things up and first power-up

Wiring the CyberMaxFM+ is easy, just make sure you read the previous chapter first and setup antenna and coaxial cable correctly. Than proceed with the following:

- Erect antenna tower and install antenna securely. Make sure your antenna is well away from any metal objects. Ensure your antenna tower is grounded securely.

- Connect one end of your 50ohm coaxial cable to the antenna. If you have SWR analyzer you can now verify SWR of your antenna. If your antenna is already tuned connect the other end of coaxial cable to the antenna connector (BNC) at the back of the transmitter. If you have SWR/POWER meter, you can wire that one inline between antenna and transmitter as well. Make sure the SWR meter supports the frequency band required (87-108MHz). Ensure all connectors are firmly secured and antenna is mounted securely.

- While making sure power switch is off connect mains power cable into the mains power supply and connect mains power supply into the back of the transmitter.

- Inspect all cables quickly again and make sure everything is secure.

- Turn on a radio receiver and set it to your intended transmitter frequency.

- Flip the POWER switch and wait for the unit to turn on. Enter the menu system by pressing the bottom key (Menu) repeatedly and look for the <RF power> menu item. Now set desired output power with the UP/DOWN keys. For tuning and testing use around 25% of full power. Press Menu again to exit back to main display. Now you can use the UP/DOWN keys to set the desired frequency of operation. Wait a few seconds for the red LED diode to turn off. Your radio should now mute since you did not connect any audio sources yet.

- Observe SWR and output power. If everything seems ok enter <RF power> menu on your amplifier again. Increase power to full.

- You can now connect audio sources of choice and verify audio performance. You should not sound louder than other stations, in fact unless you have an expensive high performance software or hardware sound processor you should sound quieter than other stations.

Chapter

Brought to you by PCS Electronics, www.pcs-electronics.com

Using the CyberMaxFM+ series transmitter

Basically there are three push-buttons available for the menu system; UP, DOWN and MENU. By pushing UP or DOWN you get a shift of frequency in corresponding direction. Hold any of these keys for a few seconds and the jumps

will increase to 500 KHz. The new frequency is saved automatically. The third button (MENU) gives you an option to select and setup many of the options and DSP functions of this unit.

Lcd control module menu system: Power and DSP functions

The UP and DOWN keys are used to change parameter values. In normal mode the LCD simply shows the frequency and power or whatever view you select. Menu key can be used to enter the menu mode, repeatedly pressing this key brings up the following menus: <RF POWER>, <STEREO MODE>, <VIEW SELECT>, <TREBLE>, <BASS>, <COMPRESSION>, <THRESHOLD>, <ATTACK>, <DECAY>, <INTEGRATION>, <LCD CONTRAST>, <RIGHT CH VOL>, <LEFT CH VOL>, <PLL STEP>, <RF EQ>, <FIRMWARE VER>, <PWR/SWR METER>, <TEMP ALARM>, <SWR ALARM>, <BAND SELECT>, and <RF AMP CONTROL>. Pressing the UP or DOWN key selects the desired parameter and allows you to modify its value. Another press on the MENU key and you’re back to the normal mode. Note that all these settings except power and frequency are already set as they should be so changing them should not be necessary and is not recommended.

Changing frequency

Simply press the UP/DOWN button to change frequency. Depending on PLL STEP setting your frequency will go down in 5/10/25/50/100/200KHz steps. If you keep pressing a key for a while the PLL STEP switches to fast tuning mode and jumps in 500KHz steps.

Note: Frequency changes also when you select a view type which does not show frequency, such as UPTIME.

This setting allows you to set output power. Select desired power with the UP/DOWN keys and press MENU key to exit the menu system and return to normal operation. Selected power is displayed on the LCD as a line of bars. Think of this setting as an accelerator (gas) pedal in your car. Think of the power in watts that is shown on the LCD as the speed meter in your car. Depending on the road going uphill or downhill speed meter will show different values even if your accelerator pedal is fixed in the same position. If you go downhill your speed will be greater with same amount of gas pedal. Likewise here your supply voltage can affect the actual output power slightly.

You can set your transmitter to MONO or STEREO here.

Chapter

Brought to you by PCS Electronics, www.pcs-electronics.com

CyberMaxFM+ is capable of displaying a number of various parameters. Since the LCD real-estate is limited to 2x16 characters we prepared a number of pre-programmed views that only show a selected number of parameters. At the time of writing these views were available:

- [Freq+Mode+Pwr] – This view shows frequency, mono/stereo mode and output power

- [Fr+Mode+Te+Ue] – This view shows frequency, mono/stereo mode, exciter temperature and exciter supply voltage

- [Po+Pr+Uamp+Ta] – This view shows output power, reflected power, amplifier supply voltage and amplifier temperature (if used)

- [Audio Level] – This view shows audio level bar graph. For this to work you the W solder bridge on the LCD module needs to be closed-soldered.

- [Uptime D:H:M] – This view shows how long the transmitter has been operating without mains power going out. It is sometimes useful in diagnosing mains power failures.

- [Auto Scroll]D – This is the default view, it shows each of the above listed views for a short while and than moves on to the next in an endless loop. This way you can see all the relevant parameters without having to go through the menu system to change the view type, You just have to wait a few seconds for the view to change.

<TREBLE> and <BASS> (only with DSP stereo encoders)

This option allows you to set the amount of TREBLE and BASS in your audio. Recommended values are marked with (D).

Fig. 8: Setting treble

Compressor Settings (only with DSP stereo encoders)

A number of MENU settings control the operation of the compressor. Lets assume that the audio signal enters the transmitter at some low level. Compressor does nothing to the signal until at one point as the input signal increases the signal reaches the compression threshold. Digital signal processor starts compressing the signal beyond that point. The higher the compression ratio the higher the compression. For example, compression ratio of 1:∞ would in effect be a limiter.

Fig. 9: Explanation of the compressor settings

Brought to you by PCS Electronics, www.pcs-electronics.com

Fig. 10: Setting the compression level

Fig. 11: Setting the compression threshold

Fig. 12: Setting the attack time, this is the time between the input signal and the actual response of the compressor

Fig. 13: Setting the decay time, this is the time the compressor needs to respond after the input signal falls back to normal level (below threshold).

Fig. 14: Setting the integration interval, this is the time the DSP evaluates the signal to establish whether it should respond or not

Integration interval determines the energy needed to trip the compressor. In simple words; it determines how long the audio needs to be loud for the compressor to respond by reducing the gain. This is not to be confused with attack time. Attack time of 50ms means the compressor will respond in 50ms after the signal spike is detected, regardless of duration of that spike, even if it is just a very short event. With longer integration interval, on the other hand, compressor only responds if a long spike or a substantial number of spikes is detected (meaning more signal energy).

Select for the best visibility. Contrast is slightly affected by ambient temperature and you can adapt it to your needs here.

Fig. 15: Changing contrast

Left and right channel volume (only with DSP stereo encoders)

This option allows you to precisely adjust the input sensitivity of both audio channels. This is very useful when your audio source has either too high or too low output level.

Brought to you by PCS Electronics, www.pcs-electronics.com

Fig. 16: Changing right input channel gain

Frequency can normally be adjusted in smallest steps of 5KHz or larger steps of 10KHZ, 25KHz, 50KHz or 100KHz. We recommend you to select 100KHz as this lets you change frequency fast and there is rarely need for fine tuning. However, you can enter this menu and select a PLL step of 5KHz for example and take advantage of these small steps.

This option allows you to display current LCD module firmware version.

Fig. 17: Firmware version

You can set the sensitivity of amplifier current alarm here. We recommend you set these according to your amplifier. This alarm only works if you use PCS LPF 6000 or PCS LPF 5000 filters with current sensor. Current meter accuracy is not very high at this time.

You can set the sensitivity of temperature alarm here. We recommend you set these to 75 degrees Celsius. A properly installed unit with a tiny fan will typically run at 55 degrees C at maximum output power. This alarm applies to externally sensed temperature (PCS LPF 6000/7000 or ControlMini2), if you are using external PWR/SWR METER.

You can set the sensitivity of software driven SWR alarm here.

You can set the sensitivity of amplifier supply voltage alarm here. We recommend you set these according to your amplifier. Usually this is around 50V. This alarm only works if you use PCS LPF 5000/6000/7000 filters with voltage sensor.

MAXPRO5015+ supports one band, if you want us to modify design for another frequency please let us know:

- [87.5-108MHz]D – This is default band, used in most of the world. MAXPRO5015+ works perfectly across the entire band. Changing this setting can lead to serious damage so it can only be changed in our testing lab.

This menu option lets you choose how the MAX PRO 5015+ controls the amplifier. Please leave this setting at default value “(D).

Brought to you by PCS Electronics, www.pcs-electronics.com

This menu option is useful for situations where MAX PRO 5000 drives a pallet or other FM amplifier. It is possible to set a limit power level (for example 500W) and exciter will reduce its output power if needed to prevent overdriving. This is a very useful feature when you are for example building a 500W, 1000W or stronger FM transmitter, it ensures constant power across the band without overdriving. Changing this setting can lead to serious damage so it can only be changed in

our testing lab.

Brought to you by PCS Electronics, www.pcs-electronics.com

DESCRIPTION OF WINDOWS CONTROL PROGRAM

Setup

COM port

Select correct COM port here. Usually this would be COM1. Baud rate is selected automatically according to the selected FM transmitter type.

Communication test tool

Use this feature to find correct settings easily. Try different settings and check them by clicking the button.

Autoscan

Use this feature to find correct settings even more easily. Just click it and wait to program find the connected transmitter by itself.

Chapter

Brought to you by PCS Electronics, www.pcs-electronics.com

FM TX main

FM transmitter type

Select your FM transmitter type.

FM transmitter frequency

Set the frequency by 0.5 or 0.05MHz step.

Transmitter output power

Set the desired output power.

Stereo/Mono

Select audio mode.

Audio input level

Select audio gain for left and right channel separately.

Bass and Treble

Select boost level for Bass and Treble.

Brought to you by PCS Electronics, www.pcs-electronics.com

Audio Compressor Settings (only with DSP stereo encoders)

These are settings which control the operation of the compressor. Lets assume that the audio signal enters the transmitter at some low level. Compressor does nothing to the signal until at one point as the input signal increases the signal reaches the compression threshold. Digital signal processor starts compressing the signal beyond that point. The higher the compression ratio the higher the compression. For example, compression ratio of 1:1 would in effect be a limiter.

Attack: Set the attack time, this is the time between the input signal and the actual response of the compressor.

Decay: Set the decay time, this is the time the compressor needs to respond after the input signal falls back to

normal level (below threshold).

Interval: Set the integration interval, this is the time the DSP evaluates the signal to establish whether it should respond or not.

Threshold: Set the compression threshold.

Compression: Set the compression level.

Brought to you by PCS Electronics, www.pcs-electronics.com

FM TX alarms

Here many operating parameters can be observed including alarms. Threshold values of alarms can be set too.

Read TX

Click this button to get the current status of your hardware.

Auto read TX

Check this box to activate automatic continous hardware status reading.

Brought to you by PCS Electronics, www.pcs-electronics.com

PI, PTY...

PI code

This information consists of a code enabling the receiver to distinguish between countries, areas in which the same programme is transmitted, and the identification of the programme itself. The code is not intended for direct display and is assigned to each individual radio programme, to enable it to be distinguished from all other programmes. One important application of this information would be to enable the receiver to search automatically for an alternative frequency in case of bad reception of the programme to which the receiver is tuned; the criteria for the change-over to the new frequency would be the presence of a better signal having the same Programme Identification code.

TP/TA flag

TP is a flag to indicate that the tuned program carries traffic announcements. The TP flag must only be set on programs which dynamically switch on the TA identification during traffic announcements. The signal shall be taken into account during automatic search tuning, so I recommend to turn this flag on even though you don't transmit any traffic announcements.

Program type PTY

This is an identification number to be transmitted with each program item and which is intended to specify the current Program type within 31 possibilities. This code could be used for search tuning. The code will, moreover, enable suitable receivers and recorders to be pre-set to respond only to program items of the desired type. The last number, i.e. 31, is reserved for an alarm identification which is intended to switch on the audio signal when a receiver is operated in a waiting reception mode.

Music/Speech

This is a two-state signal to provide information on whether music or speech is being broadcast. The signal would permit receivers to be equipped with two separate volume controls, one for music and one for speech, so that the listener could adjust the balance between them to suit his individual listening habits.

AF - Alternative Frequncies

The list of alternative frequencies gives information on the various transmitters broadcasting the same program in the same or adjacent reception areas. This facility is particularly useful in the case of car and portable radios. When the PI code indicates local coverage-area, i.e. only one frequency is used, AF list may contain this frequency.

Brought to you by PCS Electronics, www.pcs-electronics.com

PS0

This is the label of the program service consisting of not more than eight alphanumeric characters, which is displayed by RDS receivers in order to inform the listener what program service is being broadcast by the station to which the receiver is tuned. If you want to use just one PS setting please set delay for all others to 0. You can select delay for each of the PS labels. Note that setting a 0 disables associated PI. Labels will start at the start of the list once they reach the last defined PS label.

Do not exagerate, fast changing PI labels can compromise driver safety!

More information about PS feature

This is the most interesting feature for 99% of customers out there so we will dedicate a bit more time to it. RDS standard provides for a 8-character PS string which is used to identify radio station and is displayed by RDS-enabled radio receivers. Some countries prohibit changing this text dynamically, but others don't. Whatever your decision may be, RDSMAX supports either static or dynamic PS. It is best to check with the local authorities before setting up the RDS encoder. The mechanism for handling dynamic (or static) PS text is best demonstrated by the following example: Imagine a train traveling in a round trip involving 100 train stations. The train starts on station 00 (PS00) and goes through stations 01, 02…. until it passes through station 99 and finally returns to station 00. Every time a train stops at the station it sends the message back to the headquoters (PS text shown on RDS receiver). The amount of time the train stays at the station (delay - PD00 to PD99) varies and can be from 0 minutes (train does not stop) to 9 minutes. I hope this little analogy has illustrated the process. You have 100 8-character strings (PS00 to PS99) which are displayed one after the other until the entire loop repeats itself. You can define how long each of these strings is displayed, the parameter which defines this is PD (PD00 to PD99).

Example: If you wish to just have one static PS, set all delays to 0 and set just PD00 to 1. Than set PS00 to desired statis PS, which will be displayed indefinitely.

Brought to you by PCS Electronics, www.pcs-electronics.com

PS1

Next level of PS messages.

PS2

Last level of PS messages.

Brought to you by PCS Electronics, www.pcs-electronics.com

TIME, MSG...

Computer time and date

Select to Synchronize RDS RTC (Real Time Clock) with current PC clock.

External switchable messages

To activate these messages attach 8 switches to header J10 (EXTMSG). These switches must be going to ground from each of the 8 pins and are activated when you ground the corresponding pin. Message is scrolled, if larger than 8 characters.

Brought to you by PCS Electronics, www.pcs-electronics.com

AUTO PS, RT...

Auto PS and RT update is another hugely popular feature. Basically you can take the song title from Winamp or another program via text file. Winamp must be setup to write its song info into a text file, this is done with TitleSpy plugin. Most other playback programs can easily be setup to write song info into a text file. You can use this info to update PS or RT text. PS text is limited to 8 characters so the entire song title can either be scrolled or split into 8character blocks. You can set the speed of scrolling on the panel above. You can also insert DATE at the end of the scrolling block. A really popular and nifty feature indeed. This feature requires your PC to be connected to the RDS encoder at all times during music playback.

Auto update PS from txt file

This mode makes it possible to have the PS updated automatically. A number of very usefull features make this mode extremely usefull. It is possible to insert time, date or song name from external file. This external file can be updated via Winamp or any other program. If you want to collect data from Winamp (MP3 ID tag, song name) please use winamp plugin called VtitleSpy. This little program was shipped with our driver, you will find it in the RDS MAX installation folder. Install it and configure it to output winamp song info into your text file and than set RDS MAX driver to read song name from that file. Also make sure you setup VtitleSpy plugin to limit song name to 64 characters.

Auto update RT from txt file

This is another popular feature, RDS allows for 64-character text string to be displayed on the receiver. However this feature is rarely used as you need to press a button to display it (PS is always displayed by default). Another "nail in RTs' coffin" is the fact that typical receiver only displays a maximum of 8-characters at a time meaning the message needs to be scrolled. However popular or unpopular it may be, we support it.

The field at the top (RT) shows the currently active RT message

The auto update RT field makes it possible to collect the RT from any text file. In order to pick RT from a text file select the text file with the browse button and enable auto update by selecting the Yes option. RDS MAX driver will check the file once every second and update the encoder automatically, if it detects any changes of the text file.

If you want to collect data from Winamp (MP3 ID tag, song name) please use winamp plugin called VtitleSpy. This little program was shipped with our driver, you will find it in the RDS MAX installation folder. Install it and configure it to output winamp song info into your text file and than set RDS MAX driver to read song name from that file. Also make sure you setup VtitleSpy plugin to limit song name to 64 characters.

Brought to you by PCS Electronics, www.pcs-electronics.com

About

Firmware version

Here can be found firmware version of your hardware. At least one TX read must be proceeded to get the proper firmware version.

Brought to you by PCS Electronics, www.pcs-electronics.com

Common controls

These are common controls belonging to all program tabs.

Move to tray

Click Move to tray to move this program into taskbar. Check To tray at start checkbox to start the program minimized in system tray.

Preview

This window shows PS and RT preview. Select desired preview type by clicking appropriate radio button.

RDS active

Check this box to activate RDS features.

Send settings

Send settings and Send RT and PS buttons may change their appearance and accessibility according to currently active tab. Use Send settings to send parameter values + PS00 and RT to RDS encoder. Use Send RT and PS to send all PS and RT parameters to RDS encoder.

Shut down TX at exit

Check this box to automatically reduce transmitting power to 0 when exiting the program.

Send settings at start

Check this box to automatically send TX settings at starting the program. This may come handy when Shutdown TX at exit is activated to automatically raise TX power when next time starting the program.

Audio histogram

Every time the transmitter status is read, a new audio level value is added at the histogram. Status may be read manually (by clicking Read TX button) or automatically (by checking Auto TX read checkbox). Levels above 80% are marked in red colour.

Status window

Some communication activities can be observed here.

Brought to you by PCS Electronics, www.pcs-electronics.com

Scheduler

Built-in scheduler allows to user determine automatic switching of transmitting power and frequency according to predefined scheme. Schemes can be defined on daily or weekly basis. To accomplish this task the PC must be

connected to the transmitter and the program must be running all the time.

Up to 20 controlling lines can be entered into list box. Each line defines transmitting power, frequency and switching time.

Put a tick at the beggining of each line to make that line active. There can be many lines active if desired.

It is recommended to be careful while entering lines not to make time-overlapping lines active at the same time. Example: if you define a line on daily basis and at the same time another weekly based line is active the results may be unpredictable. You can always enter many lines and then decide which of them should be momentarily active by putting ticks into checkboxes.

Enable

Check this box to make the scheduler active in general.

Add...

Click Add... button to open Add form to add a new line into list box.

Edit

Select desired line first, then click Edit to open Edit form.

Remove

Select desired line first, then click Remove to delete it.

Brought to you by PCS Electronics, www.pcs-electronics.com

Add form

Add form allows you to enter the following parameters: transmitter frequency transmitter power repetition mode; it can be Daily or Weekly switching time Daily repetition mode switches every day at the same time. To make sense, at least two daily based lines should be active at the same time. Weekly repetition mode allows individually selection of days in the week.

Add or Modify

Click this button to accept changes. In the case of adding lines more lines can be entered subsequently.

Close or Cancel

Click this button to finish adding lines or to cancel editing.

Brought to you by PCS Electronics, www.pcs-electronics.com

Troubleshooting

We hope you’ll never get to this step. We all know bad things happen but do not despair! Cybermax FM+ is protected with a fuse, SWR and TEMP protection. Fuse is the first thing to check. Make sure your coaxial cable leading to the transmitter or antenna is not shorted or open. Next check the troubleshooting table on the next page. If you have problems you cannot solve yourself, please see our website for contact information and support resources in our forum.

Fig 18: So, do you think you can handle it? We think you sure can!

Chapter

Brought to you by PCS Electronics, www.pcs-electronics.com

PROBLEM DESCRIPTION POSSIBLE SOLUTIONS

Everything appears normal, but there is no RF power

1. Wait a few more seconds, MAX PRO 5000 series exciters need about 8 seconds to get their power to full, power is slowly ramped up.

2. Maybe one of the alarms was triggered and power was reduced, try to power off and power back on, whenever an alarm is triggered power may be reduced until you power off and back on

RF output power is too low 1. Maybe one of the alarms was triggered and power was reduced, try to power off and power

back on, whenever an alarm is triggered power may be reduced until you power off and back on

2. Find out which alarm was triggered, maybe your unit is over-heating or your antenna (SWR) may be way off. Let the unit cool off and ensure proper cooling in the future. Perhaps you adjusted TEMP ALARM or another alarm too low, set it slightly higher.

LCD display keeps showing TEMP/SWR error warning

1. Unit is probably over-heating or your antenna is faulty. Let the unit cool off and ensure proper cooling in the future. Perhaps you adjusted TEMP ALARM too low, set it slightly higher.

2. It is very likely that your antenna is not working correctly, check cable and check SWR. You may need to adjust SWR ALARM slightly higher (but first make sure your antenna and cable are OK).

Audio too quiet/loud 1. Open or close the modulation trimmer on MAX PRO 5015+ exciter board a bit.

2. Increase or decrease level on your audio source a little bit, start using software or hardware compressor. If increasing leads to distortion you may need to open the trimmer on MAX PRO 5015 exciter board

3. Get a compressor, you can’t sound as loud as best commercial stations unless you get a compressor, they are all using one, this can either be a software program or even better a dedicated hardware, check our website for studio equipment. Compressor keeps your audio “pumped up” while preventing over-modulation (distortion).

Audio too loud 1. Close the modulation trimmer on MAX PRO 5015+ exciter board a little bit.

2. Get a compressor, you can’t sound as loud as best commercial stations unless you get a compressor, they are all using one, this can either be a software program or even better a dedicated hardware, check our website for studio equipment. Compressor keeps your audio “pumped up” while preventing over-modulation (distortion).

Unit blows fuses and draws excessive current

You have probably burned the output transistor. It is time to contact service support; you may have to replace a final transistor.

Power supply is blinking Probably the same thing as above. Blinking power supply means its protection is shutting it off

and back on, probably due to excessive current draw caused by burned final.

Audio distortion on high peaks, for example on “s” sound.

Your audio input level is slightly too high, reduce input audio level slightly at your audio source. Use some kind of compressor to remove over-modulation peaks.

There is HUM in audio - Move antenna as far away from the transmitter and audio gear as possible

- Use balanced audio inputs (XLR audio connectors) rather than RCA

- Make sure SWR is low and that all equipment is grounded.

- Keep audio cables short and away from antenna and RF coaxial cable

- Form a coil from coaxial cable going to the antenna, make a few turns. This stops RF currents that might be flowing on the outer braid of the coaxial cable.

Brought to you by PCS Electronics, www.pcs-electronics.com

Appendix A: DIY antenna and improvement tips

Simple GP antenna design

You can build an inexpensive 1/4 wave antenna from 1 so-239 chassis mount rf connector and 5 - 3' bronze welding rods, cut to the proper length. We don’t recommend this for more than 150W and even that only when you tune the antenna first with SWR meter. Here is how it looks:

Fig. 19: »Do it yourself« GP antenna

For other antenna designs check our web site here: http://www.pcs-electronics.com/guide_antenna.php

Some more improvement tips

Think about purchasing SWR meter to tune and align your antenna. A good antenna system is extremely important and can make up for a lot of power. For a suitable SWR meter check:

http://www.pcs-electronics.com/cn101l-daiwa-power-meter-p-347.html

If you can’t get much range with your homebrew antenna, have a look at these:

http://www.pcs-electronics.com/antennas-c-38.html

Appendix

If you have a SWR meter, leave a bit longer radiator and adjust it later by cutting to achieve minimum SWR.

Most designs on the web don't compensate for the fact that GP antennas are not wideband antennas. Here is a Freq/element length chart for this simple GP antenna, all element lengths are in millimeters:

Frequency Radiator - B Radials - A 108MHZ 660mm 693mm 104MHz 684mm 720mm 100MHz 713mm 749mm 90MHz 792mm 819mm

Brought to you by PCS Electronics, www.pcs-electronics.com

Appendix B: General tips for setting up transmitters

Typical FM transmitter setups

Below are several of the typical broadcasting systems that can be encountered worldwide.

Fig. 20: Typical broadcasting systems

Lets look at system A first. It consists of audio source (mixer, microphones, CD players and a PC), FM exciter with integrated RDS and stereo encoder (such as our CyberMaxFM+ units from 15W-300W) and antenna. Note antenna in this system is located in the same location as the transmitter and studio, typically it would be placed on a small tower or a pole at the top of the building with studio. Disadvantage of this system is that you have to keep studio, transmitter and antenna close. Now you usually can’t place studio on the top of a mountain for practical reasons so this limits your range. This is a typical small community radio with output powers of up to 300-500W.

System B is very similar to system A, but operators have decided to add an additional amplifier to boost the range. Such stations can go into kilowatts, but they are starting to hit another speed limit. Since the studio is typically located in a town, high RF powers aren’t desirable due to interference with other services and safety regulations. So range is still limited compared to system C stations.

System C is radically different in one respect. Antenna and transmitter are no longer located at the same place with the studio. To accomplish this the two audio channels are first combined with stereo processor. Resulting MPX signal is than passed to the STL wireless link transmitter (STL=Studio Transmitter Link). Up in the mountains is a STL wireless link receiver that receives the signal from the studio and passes I to the exciter. In this case exciter does not need to be stereo anymore since composite MPX signal is passed to its MPX input (all mono transmitters have this input). Such exciters can than optionally drive big amplifiers with powers going into tens of KW with maximum range.

You can check our amplifiers here: http://www.pcs-electronics.com/fm-amplifiers-c-41.html

You can check our wireless STL links here: http://www.pcs-electronics.com/wireless-audio-links-c-42.html

Appendix

Brought to you by PCS Electronics, www.pcs-electronics.com

Typical FM broadcasting antenna setups

Below are several of the typical broadcasting antenna systems that can be encountered worldwide.

Fig. 21: Typical antenna setups

Lets look at system A first. It’s a simple vertical dipole antenna, mounted on a pole. The gain of this antenna is 0dBd and if we assume that the coaxial cable does not have any losses the ERP of this system equals transmitter power. For example, a 1KW transmitter with this antenna system and perfect coaxial cable (losses=0) would have ERP of 1000W. Radiation pattern of this system is more-less omni-directional but since the metal pole holding the antenna blocks the signal there is a null of signal exactly on the opposite side of the pole.

System B has two simple dipole antennas mounted on a pole. The gain of this antenna is slightly less than 3dBd (due to losses in harness – splitter). If we assume that the coaxial cable does not have any losses the ERP of this system equals double transmitter power. For example, a 1KW transmitter with this antenna system and perfect coaxial cable (losses=0) would have ERP of 2000W. Note the antennas are mounted on the opposite sides of the pole to help make radiation pattern as omni-directional as possible.

System C has four simple vertical dipole antennas mounted on a pole. The gain of this antenna is slightly less than 6dBd (due to losses in harness – splitter). If we assume that the coaxial cable does not have any losses the ERP of this system equals 4x transmitter power. For example, a 1KW transmitter with this antenna system and perfect coaxial cable (losses=0) would have ERP of 4000W. Note the antennas are mounted at an angle of 90 degrees between each other to help make radiation pattern as omni-directional as possible.

System C has theoretically double the range of the System A although in practice it takes 4-6x increase of power to double the range. 4x increase of power is equal to 6dB of gain. And you get 3dB of gain by doubling the number of dipoles. So to upgrade system C to 9dBd you’d need 8 dipoles. And for 12dBd you’d need 16 dipoles. 16 dipoles would in theory increase your range 4x compared to a single dipole. In practice there would be some losses in combining so many dipoles. You can use circular dipoles in very similar configurations.

Brought to you by PCS Electronics, www.pcs-electronics.com

Wiring antennas in multi-bay configurations

We have observed typical multi-dipole (called multi-bay) antenna configurations on the previous page. However there are some things to keep in mind.

Fig. 22: Wiring multi-bay antennas

Look at the diagram above. This is a simple system with two dipole antennas and a 2-way coaxial splitter (harness). This splitter is made from sections of coaxial cable with such impedance and length which ensure perfect match at specific frequency. Do not attempt to assemble from regular 50-ohm coaxial cable. What is important here is that the two sections of coaxial cable going from antenna to the splitter should be of exact equal length. These two sections are shown in black. The same rule applies for system with more dipoles. It is also possible to have cables of different lengths, but you have to know velocity factor of the cable so we have omitted this for simplicity reasons. If you want more info please contact our technical staff.

Brought to you by PCS Electronics, www.pcs-electronics.com

Appendix C – Attaching external stereo processor

You may prefer to use another external stereo sound processor. Usually this could be for two reasons, either because you obtained a professional grade high-performance stereo sound processor or because you are using a wireless link. Here is what your system would look like for wireless studio-transmitter link:

Fig. 23: Using external stereo/rds processor for wireless link

Fig. 23: Using external professional stereo/rds processor

It is important that you set the CyberMaxFM+ unit in these two systems to MONO. This ensures that the two stereo encoders are not interfering with each other. Next you can connect external stereo encoder or wireless link receiver to the MPXin input at the back of the unit. If you get stuck or need our advice please contact our technical department.

Appendix

Brought to you by PCS Electronics, www.pcs-electronics.com

Appendix D – PC remote control via USB and RS232

Software installation

Download the latest CyberMaxFM driver from our website. You can find it here:

http://www.pcs-electronics.com/phpBB2/viewtopic.php?t=2268

Once you have the driver run the setup file and install the program on your computer. This process is very straight-forward and should only take a few minutes. Wait for the installation to complete and click Finish when done.

Fig. 24: Setup is about to start

Once the installation is done you are ready to start the program. You are now ready to establish connection with the CYBERMAXFM+ and configure all the parameters.

Fig. 25: CYBERMAXFM+ application program

Appendix

Brought to you by PCS Electronics, www.pcs-electronics.com

As you can see this program lets you control all parameters of your FM exciter board. It also lets you read all of the available information, such as output power, temperature, frequency, uptime etc.

Configuring communications port

The only setup required is minimal. Start the CyberMaxFM+ program, the icon should now be on the desktop. Now click File and setup. The following window will open. You can set COM port manually or you can use Autoscan feature. Make sure to set FM Transmitter type correctly and it is turned On! A short guide for manual settings: If you are using USB make sure to set COM port to 5! When using RS232 please set COM port to 1 or 2. These settings are usually correct. If not, we will explain the installation and setup process for USB control cable in more detail below. You can use Communication test tool to approve the selected COM port.

Fig. 26: Set COM port to 1 for RS232 IO board

Installing USB driver (only for USB IO board)

Unzip the archive_usb2comport_driver.zip file that you downloaded off our website here: http://www.pcselectronics.com/phpBB2/viewtopic.php?t=2268

Wait for the following screen to appear and select the installation directory (best left alone at default location). Click Install and wait for the installation to finish.

Fig. 27: Installing USB driver

Configuring USB driver

In Windows go to Start > Settings > Control Panel > System > Hardware tab > Device Manager (This can vary depending on your Windows version). You should have something like this on your screen at this point:

Brought to you by PCS Electronics, www.pcs-electronics.com

Fig. 28: Configuring Com port for USB driver

Take note of the COM port number here, you will need it later to configure the COM port inside CyberMaxFM+ windows control program. If you wish to change this port right click on the PCS USB-COM port and select Properties. Now select the Port settings tab and click Advanced. Note you can set the COM port number as you wish:

Fig. 29: Configuring Com port for USB driver

Brought to you by PCS Electronics, www.pcs-electronics.com

Appendix E – Setting up remote control via Ethernet

Software installation

Download the latest EthernetVirtualPort.exe from our website. You can find it here:

http://www.pcs-electronics.com/phpBB2/viewtopic.php?t=2268

Connect the CYBERMAXFM+ to your network via Ethernet cable (cable not included). The Ethernet adapter is setup to accept IP from your router’s DHCP server. It is possible to setup Ethernet adapter with fixed IP or to login directly to ADSL modem. If you need MAC address of the Ethernet adapter open the cover of the unit and look at the Ethernet adapter, the MAC address is shown on the adapter. Now create and configure a connection between the PC and CYBERMAXFM+ as shown below. Note the IP will differ, but make sure the port is set to 5005!

Fig. 30: Seting up Ethernet connection for CYBERMAXFM+, screen 1

Appendix

Brought to you by PCS Electronics, www.pcs-electronics.com

Fig. 31: Seting up Ethernet connection for CYBERMAXFM+, screen 2

Fig. 32: Seting up Ethernet connection for CYBERMAXFM+, screen 3

Brought to you by PCS Electronics, www.pcs-electronics.com

Fig. 33: Seting up Ethernet connection for CYBERMAXFM+, screen 4

Fig. 34: Seting up Ethernet connection for CYBERMAXFM+, overview

Brought to you by PCS Electronics, www.pcs-electronics.com

Appendix F: What is RDS?

The use of more and more frequencies for radio programs in the VHF/FM range makes it increasingly difficult to tune a conventional radio to a desired program. This kind of difficulty is solved with the Radio Data System, that has been on the market since 1987, and whose spectacular evolution is still continuing. RDS has by now conquered all receiver price classes and one can easily imagine that it will soon be part of the standard equipment of any radio receiver.

The development of RDS started some 20 years ago in the European Broadcasting Union, EBU. The developers aimed at making radio receivers very user-friendly, especially car radios when these are used where a transmitter network with a number of alternative frequencies (AF) are present. In addition listeners should be enabled to see the program service name (PS) on an eight character alpha-numerical display and the transmitter frequency information, displayed on non-RDS radios, is then only used, in the background, by an RDS radio. All this has become possible by the using, for many years, microprocessor controlled PLL tuner technology, permitting a radio to be retuned within milliseconds. During this process the audio signal is muted which because of the short time is usually not detected by the ear. Thus, the radio is able to choose the transmitter frequency, among a number of alternatives that gives the best quality reception. It is also sure that the switch-over is made to exactly the same program service by performing a kind of identity check using the program identity code.

Travel information with RDS is possible using the Travel Program (TP) and Travel Announcement (TA) flags. Information is broadcast for motorists, identified in parallel with the ARI system with the corresponding RDS features TP/TA. But ARI is being replaced on a European scale, so it will cease after the year 2005. A more recent development of RDS is the digitally coded Traffic Message Channel (TMC) which is now planned to be introduced all over Europe, within projects funded by the European Union. However, present RDS radios are not yet suitable for RDS-TMC.

Once a radio is tuned to a program service broadcast within a network, using the RDS feature Enhanced Other Networks (EON) additional data about other programs from the same broadcaster will be received. This enables the listener, according to his choice, to have his radio operating in an automatic switch-mode for travel information or a preferred Program Type (PTY, e.g. News) and this information comes from a service that, at a given time, does not necessarily contain such travel information nor even broadcasts the desired program type.

Many of the Hi-Fi home tuners or receivers at this IFA implement, apart from the usual RDS features (PI, PS, TP,TA, AF), some of the newer features such as Program Type-PTY, Radiotext-RT and Clock-Time, displaying the time/date.

RDS is absolutely future proof and will not be replaced by DAB, at least until such time as when FM broadcasting ceases to exist and this, for sure, is not going to happen within the next 20 years, in spite of the breathtaking developments of the new era of digital broadcasting.

Short descriptions about different RDS services:

PI (Programme Identification)

This is the unique code that identifies the station. Every station receives a specific code with a country prefix. In the US, PI is determined by applying a formula to the station's call sign.

AF (Alternative Frequencies)

This allows a receiver to re-tune to a different frequency providing the same station when the first signal becomes too weak (e.g., when moving out of range). This is often utilized in car stereo systems.

Appendix

Brought to you by PCS Electronics, www.pcs-electronics.com

PTY (Programme Type)

This coding of up to 31 pre-defined programme types (e.g., in Europe: PTY1 News, PTY6 Drama, PTY11 Rock

music) allows users to find similar programming by genre. PTY31 seems to be reserved for emergency announcements in the event of natural disasters or other major calamities.

TA, TP (Traffic Announcement, Traffic Programme)

The receiver can often be set to pay special attention to this flag and, for example, stop the tape/pause the CD or

retune to receive a traffic bulletin. The TP flag is used to allow the user to find only those stations that regularly broadcast traffic bulletins whereas the TA flag is used to signal an actual traffic bulletin in progress, with radio units perhaps performing other actions such as stopping a cassette tape (so the radio can be heard) or raising the volume during the traffic bulletin.

PS (Programme Service)

This is simply an eight-character static display that represents the call letters or station identity name. Most RDS

capable receivers display this information and, if the station is stored in the receiver's presets, will cache this information with the frequency and other details associated with that preset.

CT (Clock Time)

Can synchronize a clock in the receiver or the main clock in a car. Due to transmission vagaries, CT can only be accurate to within 100 ms of UTC.

EON (Enhanced Other Networks)

Allows the receiver to monitor other networks or stations for traffic programmes, and automatically temporarily tune into that station.

REG (Regional)

This is mainly used in countries where national broadcasters run "region-specific" programming such as regional opt-outs on some of their transmitters. This functionality allows the user to "lock-down" the set to their current region or let the radio tune into other region-specific programming as they move into the other region.

RT (Radio Text)

This function allows a radio station to transmit a 64-character free-form textual information that can be either static e.g. station slogans or in sync with the programming such as the title and artist of the currently playing song.

TMC (Traffic Message Channel)

Digitally encoded traffic information. Not all RDS equipment supports this, but it is often available for automotive navigation systems. In many countries only encrypted traffic data is broadcast, and so an appropriate decoder, possibly tied to a subscription service, is required to use the traffic data.

Brought to you by PCS Electronics, www.pcs-electronics.com

List of RDS and RBDS program type codes and their meanings

Brought to you by PCS Electronics, www.pcs-electronics.com

RDS Country codes

RDS TP and TA codes

Brought to you by PCS Electronics, www.pcs-electronics.com

Appendix G: Communication protocol explanation

If you are one of the many interested in developing your own RDSMAX application, look no further. The entire protocol will be explained here in detail. Also check the provided sample VB application. If you’re still stuck, do drop us an email and we will be more than happy to help you out.

Baud rate and COM port

Communication with RDSMAX 4000+ uses RS232 protocol. There are 4 supported speeds, 2400, 14400, 19200 and

38400. 2400 was provided for extremely long cable runs, 14400 was used for compatibility with RDSMAX 30, 19200 and 38400 were added for cases where fast update time is an advantage.

A simple VB code would look like this: MSComm1.CommPort = COMSelected 'This can be COM1, COM2 etc Select Case COMSpeed Case 1 MSComm1.Settings = "2400,N,8,1" Case 2 MSComm1.Settings = "14400,N,8,1" Case 3 MSComm1.Settings = "19200,N,8,1" Case 4 MSComm1.Settings = "38400,N,8,1" End Select MSComm1.InputLen = 0 MSComm1.PortOpen = True

General Command Format

This is the format of a typical command sent to the RDSMAX encoder:

<StartByte>Command<EndCommandByte>Value<EndByte>

<StartByte>: Signals start of new incoming command/parameter

The hey/binary value of this byte is 0x00 (0b00000000). VB basic example: MSComm1.Output = Chr$(0) 'Start (0)

Command: Command/parameter that you wish to send to the encoder

Simply send the command/parameter in ASCII form. VB basic example: MSComm1.Output = "TA"

<EndCommandByte>: Signals end of the new incoming command, tells encoder to expect incoming

command/parameter value The hey/binary value of this byte is 0x01 (0b00000001). VB basic example: MSComm1.Output = Chr$(1) ‘End Command start of value(1)

Value: Command/parameter value that you wish to send to the encoder

The method varies a bit from parameter to parameter, but usually you can simply send the command/parameter value in ASCII form. Check each parameter individually for correct setting. VB basic example: MSComm1.Output = "1" 'sets TA to ON

<EndByte>: Signals the end of complete incoming command including command/parameter value, it tells encoder

to process the received data

Appendix

Brought to you by PCS Electronics, www.pcs-electronics.com

VB basic example: MSComm1.Output = Chr$(2) ‘End Command and value

This is the most interesting feature for 99% of customers out there so we will dedicate a bit more time to it. RDS standard provides for a 8-character PS string which is used to identify radio station and is displayed by RDS-enabled radio receivers. Some countries prohibit changing this text dynamically, but others don’t. Whatever your decision may be, RDSMAX supports either static or dynamic PS. It is best to check with the local authorities before setting up the RDS encoder. The mechanism for handling dynamic (or static) PS text is best demonstrated by the following example: Imagine a train traveling in a round trip involving 100 train stations. The train starts on station 00 (PS00) and goes through stations 01, 02…. until it passes through station 99 and finally returns to station 00. Every time a train stops at the station it sends the message back to the headquoters (PS text shown on RDS receiver). The amount of time the train stays at the station (delay – PD00 to PD99) varies and can be from 0 minutes (train does not stop) to 9 minutes. I hope this little analogy has illustrated the process. You have 100 8-character strings (PS00 to PS99) which are displayed one after the other until the entire loop repeats itself. You can define how long each of these strings is displayed, the parameter which defines this is PD (PD00 to PD99).

Example: If you wish to just have one static PS, set all delays to 0 and set just PD00 to 1. Than set PS00 to desired statis PS, which will be displayed indefinitely.

General Command Format

This is the format of a PS00 command, which sets PS00 to **TEST**:

VB basic example: MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "PS00" MSComm1.Output = Chr$(1) ‘End Command start of value(1) MSComm1.Output = "**TEST**" MSComm1.Output = Chr$(2) ‘End Command and value

This is the format of a PD00 command, which sets PD00 to 5:

VB basic example: MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "PD00" MSComm1.Output = Chr$(1) ‘End Command start of value(1) MSComm1.Output = "5" MSComm1.Output = Chr$(2) ‘End Command and value

It is recommended to put a short delay of 10ms after sending of each data packet. So the example above becomes:

MSComm1.Output = Chr$(0) 'Start (0) Sleep 10 MSComm1.Output = "PD00" Sleep 10 MSComm1.Output = Chr$(1) ‘End Command start of value(1) Sleep 10 MSComm1.Output = "5" Sleep 10 MSComm1.Output = Chr$(2) ‘End Command and value Sleep 10

Brought to you by PCS Electronics, www.pcs-electronics.com

RTs' coffin" is the fact that typical receiver only displays a maximum of 8-characters at a time meaning the message needs to be scrolled. However popular or unpopular it may be, we support it.

General Command Format

This is the format of a PS00 command, which sets PS00 to **TEST**:

<StartByte>RT<EndCommandByte>**THIS IS A TEST OF RADIO TEXT FEATURE**<EndByte>

VB basic example: MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "RT" MSComm1.Output = Chr$(1) ‘End Command start of value(1) MSComm1.Output = "**THIS IS A TEST OF RADIO TEXT FEATURE**" MSComm1.Output = Chr$(2) ‘End Command and value

Format descriptions for the other supported parameters:

‘Sending TP MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "TP" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(TP) temp = LTrim(temp) MSComm1.Output = temp

'Sending STEREO/MONO status MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FS" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(TXStereo) temp = LTrim(temp) MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending RDS active (PWR) MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "PWR" 'Program reference, lower byte of PI MSComm1.Output = Chr$(1) 'End command and start of data (1) If Check1.Value = 1 Then temp = "1" 'turn RDS on Else temp = "0" 'turn RDS off End If MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finished transmission

'Sending CCAC MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "CCAC" 'Program reference, lower byte of PI MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(CountryCode * 16 + AreaCoverage) temp = LTrim(temp) If Len(temp) = 2 Then temp = "0" & temp If Len(temp) = 1 Then temp = "00" & temp If Len(temp) = 0 Then temp = "000" MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finished transmission

'Sending ProgReference MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "PREF" 'Program reference, lower byte of PI MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(ProgramReference) temp = LTrim(temp) If Len(temp) = 2 Then temp = "0" & temp If Len(temp) = 1 Then temp = "00" & temp If Len(temp) = 0 Then temp = "000" MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finished transmission

'Sending PTY

Brought to you by PCS Electronics, www.pcs-electronics.com

MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "PTY" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(PTY) temp = LTrim(temp) If Len(temp) = 1 Then temp = "0" & temp If Len(temp) = 0 Then temp = "00" MSComm1.Output = temp

'Sending TP MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "TP" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(TP) temp = LTrim(temp) MSComm1.Output = temp

'Sending TA MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "TA" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(TA) temp = LTrim(temp) MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending MS MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "MS" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(MS) temp = LTrim(temp) MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending Did0 MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "Did0" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Str$(DId0) temp = LTrim(temp) MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending AF0 (af number) MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "AF0" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Chr$(AFNum + 224 + 4) MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending AF1 MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "AF1" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Chr$(AF1 + 4) MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending RT MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "RT" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = RT & Chr$(13) & Chr$(13) & String(64, Chr(13)) If Len(temp) > 64 Then temp = Left(temp, 64) MSComm1.Output = temp 'RT MSComm1.Output = Chr$(2) 'Finish command

'Send PS MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "PS00" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = “your text” MSComm1.Output = temp

Brought to you by PCS Electronics, www.pcs-electronics.com

MSComm1.Output = Chr$(2) 'Finish command

'Sending ECC MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "ECC" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Chr$(ECC + 4) MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending RF POWER status MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FO" MSComm1.Output = Chr$(1) 'End command and start of data (1) If Option25(13).Value = True Then ‘check version temp = Chr$((Int(TXPower / 100 * 34)) + 4) 'was 100*20 for max pro 4025 v3 Else temp = Chr$((Int(TXPower / 100 * 44)) + 4) 'was 100*20 for max pro 4025 v4 End If MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending Frequency MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FF" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = Chr$((Int(TXFrequency / 5) - Int(Int(TXFrequency / 5) / 128) * 128) + 4) 'low part of freq temp = temp & Chr$((Int(Int(TXFrequency / 5) / 128)) + 4) 'high part of freq MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - Treble MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDT" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(Treble + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - Bass MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDB" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(Bass + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - Attack MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDA" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(Attack + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - Decay MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDD" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(Decay + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - Threshold MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDH" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(Threshold + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - Compression MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDC" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(Compression + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - Integration

Brought to you by PCS Electronics, www.pcs-electronics.com

MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDI" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(Integration + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - LeftGain MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDGL" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(LeftGain + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending DSP settings - RightGain MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FDGR" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(RightGain + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending settings - TEMP alarm MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FAT" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(TEMPAlarm + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending settings - SWR alarm MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FAS" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(SWRAlarm + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending settings - Uamp alarm MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FAU" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(UampAlarm + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending settings - Iamp alarm MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FAC" MSComm1.Output = Chr$(1) 'End command and start of data (1) MSComm1.Output = Chr$(IampAlarm + 4) MSComm1.Output = Chr$(2) 'Finish command

'Sending Store command, commits changes MSComm1.Output = Chr$(0) 'Start (0) MSComm1.Output = "FW" MSComm1.Output = Chr$(1) 'End command and start of data (1) temp = 0 MSComm1.Output = temp MSComm1.Output = Chr$(2) 'Finish command

Brought to you by PCS Electronics, www.pcs-electronics.com

Appendix H – Warranty and legal info

Important notice!

Please remember to turn off the transmitter/amplifier when not in use! This goes especially for high powered

transmitters. Remember that anything you broadcast through the transmitter can be heard by anyone tuning in to that frequency. Although it is unlikely certain weather conditions may allow the signal to go further than your immediate listening area so please don't broadcast anything you don't mind anyone else hearing.

Warranty and servicing!

Within one (1) year of receiving your order, if any product proves to be defective; please contact us via e-mail or our feedback form. Please DO NOT ship the product back to us without contacting us first and receiving return instructions. After we receive the defective merchandise, we will test it if need be, and we will ship back to you a non-defective replacement product. Please note that this doesn't cover final RF transistor as it can be damaged by using defective or poorly matched antenna. An exception is as well any mishandling or abuse by the customer. If the product is defective, you will receive a replacement. If you choose to return the defective item, rather than replace it, we will charge a 20% restocking fee and your original shipping and handling charges will not be refunded. The return of the product is at your expense. We believe that this is a fair policy because lower overhead results in lower prices for all of our customers.

Legal info

It may be illegal to operate this device in your county. Please consult local authorities before using our products! PCS Elektronik d.o.o. is not responsible for any damage to your PC arising from use of this product and will not be held responsible for any violation of local laws pertaining to the use of this product. It is entirely your responsibility that you make sure you operate in accordance with local laws and/or regulations.

Limitation of liability

To the law, in no event shall PCS Elektronik d.o.o. or its suppliers be liable for any special, incidental, indirect, or consequential damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or any other pecuniary loss) arising out of the use of or inability to use the PRODUCT, even if PCS Elektronik d.o.o. has been advised of the possibility of such damages. In any case, PCS Elektronik d.o.o.´s entire liability under any provision of this agreement shall be limited to the greater of the amount actually paid by you for the PRODUCT or U.S. $5.00; because some states and jurisdictions do not allow the exclusion or limitation of liability, the above limitation may not apply to you.

Appendix

Brought to you by PCS Electronics, www.pcs-electronics.com

Also available from www.pcs-electronics.com

We also carry a big range of:

- FM transmitters in assembled and KIT form

- TV transmitters in assembled and KIT form, VHF and UHF

- AM transmitters with extremely clear modulation (PWM design)

- Various accessories for professional and hobby FM radio stations

- A large assortment of hard to obtain RF components (RF transistors; MRF, 2SC, coils, silver plated wire, coaxial cable, capacitors, quartz crystals and many others)

- PC based FM transmitters (PCI MAX pc based FM transmitter turns your PC into a radio station)

- A large number of beginners guides to get you started

- A large selection of free schematics is as well available at our website.

If you can’t get much range with your homebrew antenna, have a look at these: http://www.pcs-electronics.com

Brought to you by PCS Electronics, www.pcs-electronics.com

Revisions and errata

V40 (Dec 2012): Release version of new manual format

Please report any errors you see in this manual, you will be helping us and many other users out there. Thank you!

Index

adjusting............................................................ 14

Antenna............................................................. 14

beam.................................................................. 14

block diagram.................................................9, 12

Coaxial cable..................................................... 15

compressor ........................................................ 18

directional antenna............................................. 14

DIY antenna ...................................................... 37

Ethernet............................................................. 45

exciter board...................................................... 10

feedback............................................................ 14

final transistor.................................................... 14

gain ................................................................... 14

grounding .......................................................... 14

H-500................................................................ 15

mains cable........................................................ 15

mains power supply............................................ 15

metal case .......................................................... 14

omni-directional antenna .................................... 14

perfect match ..................................................... 15

radiation pattern................................................. 14

RDS................................................................... 48

RF board layout ................................................. 10

RF shielded........................................................ 14

RG-58................................................................ 15

scheduler ........................................................... 33

short circuit........................................................ 14

stereo encoder board .......................................... 12

SWR.................................................................. 14

Technical specifications ....................................... 6

troubleshooting .................................................. 35

tune ................................................................... 14

PCS Electronics CyberMaxFM+ DSP/RDS User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual