Vertex Standard VX-6000L Service Manual

VHF Low-Band FM Transceiver

VX-6000L

Service Manual

POWER

VERTEX STANDARD CO., LTD.

4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan

VERTEX STANDARD

US Headquarters

10900 Walker Street, Cypress, CA 90630, U.S.A.

International Division

8350 N.W. 52nd Terrace, Suite 201, Miami, FL 33166, U.S.A.

YAESU EUROPE B.V.

P.O. Box 75525, 1118 ZN Schiphol, The Netherlands

YAESU UK LTD.

Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U.K.

VERTEX STANDARD HK LTD.

Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong

Introduction

This manual provides technical information necessary for servicing the VX-6000L FM Transceiver.

Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-qualified persons to service this equipment may result in permanent damage not covered by the warranty, and may be illegal in some countries.

Two PCB layout diagrams are provided for each double-sided circuit board in the Transceiver. Each side of is referred to by the type of the majority of components installed on that side (“leaded” or “chip-only”). In most cases one side has only chip components, and the other has either a mixture of both chip and leaded components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only.

While we believe the technical information in this manual to be correct, VERTEX STANDARD assumes no liability for damage that may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out any inconsistencies in the technical information would be appreciated.

Operating Manual Reprint ........................ 1-1

Cloning ....................................................................

2-1

Specifications................................................2-2

Exploded View & Miscellaneous Parts ...3-1

Block Diagram .............................................. 3-2

Interconnection Diagram ...........................3-4

Circuit Description ..................................... 4-1

Alignment......................................................5-1

Board Unit (

MAIN Unit ........................................................... 6A-1

DISPLAY Unit ..................................................... 6B-1

KEY Unit .............................................................. 6C-1

VR Unit ................................................................. 6D-1

MIC CONN Unit ................................................. 6D-2

PA Unit ................................................................. 6E-1

NB Unit..................................................................6F-1

Optional Board Unit (

F2D-8 2-Tone Decode Unit ................................ 7A-1

VTP-50 VX-Trunk Unit ....................................... 7B-1

FVP-25 Encryption / DTMF Pager Unit ........... 7C-1

F5D-14 5-Tone Unit.............................................7D-1

FIF-7 Connection Unit ........................................ 7E-1

Schematics, Layouts & Parts

)

Front Panel

ƒ‚„

…

‡

ˆ‰Š

Operating Manual Reprint

CONTROLS & CONNECTORS

•

POWER

†

POWER Button

Press the button to turn the transceiver ON and

OFF.

TX Indicator

This lamp glows red when the radio is transmit-

ting.

BUSY Indicator

This lamp glows green when the channel is busy.

Liquid Crystal Display

The display include an 8-character alpha-numeric

section showing channel and group names, sta-

tus and identity information, and error messages.

Additional indicators on the display show prior-

ity channel assignments and scan include / ex-

clude selection.

This channel on “SELECTABLE TONE” List

This channel on “PUBLIC ADDRESS” or “SPEAKER” List

This channel on “HORN ALERT” List

This channel on “OPTION” List

This channel on “INTERCOM” List

Receiver Monitor

This channel on

“SCAN” List

Channel Group

Number

Ä p/q Button

Pressing these buttons changes the current group (and displayed group number or name). Holding this button for more than 1/2 second causes the function to repeat.

SQC Indicator

This lamp glows orange when incorrect position at the setting of CE49.

Programmable Function Button (PF button)

This button can be set up for special applications, such as high/low power selection, monitor, dimmer, talk-around, and call alert function, as determined by your network requirements and programmed by your VERTEX STANDARD dealer.

VOLUME Knob

This knob sets the volume of the receiver.

EMERGENCY Microphone

The emergency microphone is located behind this small slit. When the emergency feature is activated, this Microphone is enabled.

CHANNEL Selector Knob

This knob select the operating channel.

Programmable Function Button (PF button)

8 Character Alpha-numeric Display

This channel on “AUX A/B/C” List

1-1

Operating Manual Reprint

ƒ‚•

„

CONTROLS & CONNECTORS

Side Panel

Microphone Jack (It is on both sides.) Connect the microphone plug to this jack.

Microphone Jack

REAR (Heatsink)

Antenna Socket

The 50-ohm coaxial feedline to the antenna must be connected here, using a type-M (PL-259) plug.

External Speaker Jack

An external loudspeaker may be connected to this 2-contact, 3.5-mm mini-phone jack.

Caution: Do not connect this line to ground, and be

certain that the speaker has adequate capability to handle the audio output from the VX-6000.

13.4-V DC Power Connector

The supplied DC power cable must be connected to this 4-pin connector. Use only the supplied fused cable, extended if necessary, for power connection.

DSUB 25-Pin Accessory Connector

External TX audio line input, PTT (Push To Talk), Squelch, and external RX audio line output signal may be obtained from this connector for use with accessories such as data transmission/reception modems, ets.

1-2

Operating Manual Reprint

BASIC OPERATION OF THE TRANSCEIVER

Important! - Before turning on the radio the first time, confirm that the power connections have been made correctly and that a proper antenna is connected to the antenna jack.

Switching Power ON/OFF

Push the POWER switch turn on the radio. The

display will become illuminated. The radio will

start up on the last channel used prior to shut-

down during the previous operating session.

Turn the CHANNEL selector knob to choose the

desired operating channel. A channel name will

appear on the display. If you want to select the

operating channel from a different Memory

Channel Group, press the UP (p) or DOWN (q)

button to select the Memory Channel Group you

want before selecting the operating channel.

Setting the Volume

Turn the VOLUME knob clockwise to increase the

volume, and counterclockwise to decrease it. If

no signal is present, press and hold in the MON

button more than 1/2 seconds; background noise

will now be heard, and you may use this to set

the VOLUME knob for the desired audio level.

Press and hold the MON button more than 1/2

seconds to quiet the noise and resume normal

(quiet) monitoring.

Transmitting

To transmit, wait until the “BUSY” indicator is off (the channel is not in use), and press the PTT

(Push-To-Talk) switch on the side of the micro-

phone (the “TX” indicator will appear or the “TX” indicator will glow red). While holding in the PTT

switch, speak across the face of the microphone in a clear, normal voice level, and then release

the PTT switch to receive.

Selecting Groups and Channels

m Press the UP (p) or DOWN (q) button (re-

peatedly, if necessary) to select a different group of channels.

m Turn the CHANNEL selector knob to select a

different channel within the current group.

Automatic Time-Out Timer

If the selected channel has been programmed for automatic time-out, you must limit the length of each transmission. While transmitting, a beep will sound five seconds before time-out. Another beep

will sound just before the deadline; the “TX” in-

dicator will disappear and transmission will cease soon thereafter. To resume transmitting, you must

release the PTT and wait for the “penalty timer” to expire (if you press the PTT before this timer

expires, the timer restarts, and you will have to wait another “penalty” period.)

1-3

Operating Manual Reprint

ADVANCED OPERATION

Programmable Function Button (PF button)

The VX-6000 includes the seven Programmable

Function Buttons (PF button). The PF button

functions can be customized, via programming by your VERTEX STANDARD dealer, to meet your communications/network requirements. Some features may require the purchase and installation of optional internal accessories. The

possible PF button programming features are il-

POWER

Functions

None SCAN (SCN) Dual Watch Call/Reset Talk-Around (TA) Noise Blanker* (NB) Alpha Numeric (A/N) DIMMER (DIM) Emergency (EMG) Horn Alert (HA) Home Channel (HOM) Intercom (IC) Low Power (LOW) GRP UP GRP DWN CH UP CH DWN AUX A AUX B AUX C Public Address (PA) Monitor (MON) RCL Selectable Tone (ST) SP** Squelch Level (SQL) Compander Encryption*** (OPT)

* for VX-6000L ** requires RMK-4000 *** requires Encryption Unit

<1.5 sec >1.5 sec <1.5 sec >1.5 sec <1.5 sec >1.5 sec <1.5 sec >1.5 sec <1.5 sec >1.5 sec <1.5 sec >1.5 sec <1.5 sec >1.5 sec

Programmable Function Button (PF button)

lustrated at the below, and their functions are explained on next page. For further details, contact your VERTEX STANDARD dealer. For future reference, check the box next to each function that has been assigned to

the PF button on your particular radio, and keep

it handy.

1-4

Operating Manual Reprint

ADVANCED OPERATION

Channel Scan

The Scanning feature is used to monitor multiple

signals programmed into the transceiver. While

scanning, the transceiver will check each chan-

nel for the presence of a signal, and will stop on a

channel if a signal is present.

To activate scanning:

m Press the assigned PF button of the “Scan” mo-

mentarily to activate scanning.

m The scanner will search the channels, looking

for active ones; it will pause each time it finds a channel on which someone is speaking.

To stop scanning

m Press the assigned PF button of the “Scan”.

m Operation will revert to the channel to which

the CHANNEL selector knob is set.

Note:Your dealer may have programmed your

radio to stay on one of the following chan-

nels if you press the PTT switch during

scanning pause:

Current channel (“Talk Back”)

“Last Busy” channel

“Priority” channel

“Home” channel

Scan Start” channel

Dual Watch

The Dual Watch feature is similar to the Scan fea-

ture, except that only two channels are monitored:

r The current operating channel; and r The “Priority” channel.

To activate Dual Watch:

m Press the assigned PF button of the “Dual

Watch”.

m The scanner will search the two channels; it

will pause each time it finds a channel on which someone is speaking.

To stop Dual Watch:

m Press the assigned PF button of the “Dual

Watch”.

m Operation will revert to the channel to which

the CHANNEL selector knob is set.

ARTS (Auto Range Transpond System)

This system is designed to inform you when you and another ARTS-equipped station are within communication range. During ARTS operation, your radio automatically transmits for about 1 second every 25 (or 55) seconds (the interval is programmed by Dealer) in an attempt to Shake hands with the other station. If you move out of range for more than one minutes, your radio senses that no signal has been received, a ringing beeper will sound. If you subsequently move back into range, as soon as the other station transmits, your beeper will sound.

The PF Button Function

The PF (Programmable Function) button can be

programmed by the dealer to provide two of the other functions described below. To activate the primary Accessory function, press

the PF button momentarily. To access the second-

ary Accessory function (which may include the

Alarm), press and hold the PF button for 1.5 sec-

onds or longer.

Call/Reset

When this feature is programmed and a selective call has been received, momentarily press the

assigned PF button of the “Call/Reset” to reset

the flashing indicator and mute the receiver, oth-

erwise press the assigned PF button of the “Call/

Reset” to sent your radio’s identification code (ANI) to the dispatcher.

Talk-Around

The feature causes the assigned PF button of the

“Talk-Around” to select simplex operation on semi-duplex channels: the transmit frequency becomes the same as the receive frequency (regardless of any programmed offset for the channel).

Note:This feature has no effect on simplex channels.

After pressing the button, “-TAKARD-” is displayed

on the LCD.

Noise Blanker (for VX-6000L)

Because local noise can be particularly troublesome in the VHF Low-Band frequency spectrum, the Low-Band version of the VX-6000 includes a Noise Blanker feature, which may be toggled on

and off by pressing the assigned PF button of the

“Noise Blanker” for the appropriate length of time.

1-5

Operating Manual Reprint

ADVANCED OPERATION

Alpha Numeric

Press the assigned PF button of the “Alpha Nu-

meric” to switch the display between the Group/

Channel number, and the Group/Channel name (alphanumeric). A tone will sound each time you switch between numerical and alphanumerical display.

DIM

Press the assigned PF button of the “DIM” to ad-

just the brightness of the display and key backright.

EMG (Emergency)

Press the assigned PF button of the “EMG” to

initiate an emergency call (requires ANI board). When an emergency call is made, not tone is emitted and the display does not change. To end the emergency call, turn the transceiver power OFF.

HA (Horn Alert)

Press the assigned PF button of the “HA” to turn

the Horn Alert function ON or OFF. If you receive a call from the base station with 2Tone or DTMF signaling, horn alert will activate. When you turn Horn Alert ON, a tone will sound and “ ” appears on the display..

Home (Home Channel)

Press the assigned PF button of the “Home” to

select the pre-programmed Home Channel. Press it again to return to the previous channel. If used while scanning, pressing this key a second time will change to the revert channel.

IC (Intercom)

This feature requires dual head configuration.

Press the assigned PF button of the “IC” to turn

the intercom feature ON or OFF. While ON, you can press the PTT switch to communicate to another control head operator without transmitting over the air. When you press this key, a tone sounds and “ ” appears on the display. The intercom can be used even while scanning and receiving a call.

GRP UP/DWN

Press the assigned PF button of the “GRP UP”

or “GRP DWN” to select a different group of channels.

CH UP/DWN

Press the assigned PF button of the “CH UP” or

“CH DWN” to select a different channel within the current group.

AUX A/B/C

Press the assigned PF button of the “AUX A”,

“AUX B”, or “AUX C” to turn the output port (respectively).

PA (Public Address)

Press the assigned PF button of the “PA” to use

the transceiver as a PA amplifier. When you enable this function, a tone sounds and “ ” appears on the display. The public address can be used even while scanning and receiving a call.

MONI (Monitor)

Press the assigned PF button of the “MONI” mo-

mentarily to cancel CTCSS and DCS signaling

squelch; the “MON” icon appears on the display.

Press and hold this key for 1/2 seconds to hear

background noise (unmute the audio); the MON

icon blinks on the display.

RCL (Channel Recall)

During scan, you can press the assigned PF but-

ton of the “RCL” to select the last called channel.

ST (Selectable Tone)

Press the assigned PF button of the “Selectable

Tone”, then rotate the CHANNEL selector knob

to select a 2-Tone.

Press the assigned PF button of the “SP” to switch

“Front panel”, “Front panel & Body” and “Body” speaker. When “Body” is selected, a tone sounds and the “ ” icon appears on the display. You can use this function while scanning and receiving a call. However, all audio will be emitted from the PA speaker.

Low Power

Press the assigned PF button of the “Low Power”

to set the radio's transmitter to the “Low Power” mode. Press this key again to return to “High Power” operation when in difficult terrain.

1-6

ADVANCED OPERATION

SQL (Squelch Level)

You can manually adjust the squelch level using

this function:

1. Press the assigned PF button of the “SQL”. A

tone sounds and SQL appears on the display with the current squelch level.

2. Rotate the CHANNEL selector knob to select

the desired level.

3. Press the this key. A tone sounds and the display returns to the normal channel.

COMP (Compander)

Press the PF button assigned to the “COMP”

function to turn the “Compander” IC ON or OFF. This IC contains two variable gain circuits configured for compressing and expanding the dynamic range of the radio's transmitted audio signal. When you enable this function, the signal-to-noise radio can be improved by reducing the transmitted audio dynamic range.

Encryption (Option)

When the Voice Scrambler feature is enabled,

pressing the assigned PF button of the “Encryp-

tion” toggles the Scrambler on and off.

1-7

Operating Manual Reprint

OPTIONAL ACCESSORIES

MH-25 MH-53 MH-53 MH-53 CE49 Programming Software CT-70 Radio Programming Cable (Requires VPL-1) CT-71 Radio to PC Programming Cable CT-72 Radio to Radio Programming Cable CT-81 Cable for RMK-4000 (6 m) CT-82 Cable for RMK-4000 (2.5 m) CT-83 Cable for RMK-4000 (0.6 m) CNT-6000 Control Head RF DECK RF Deck w/MMB-79 (for Dual Band Installations) RMK-4000SH Remote Kit (for Single Transceiver) RMK-4000DH Remote Kit (for Dual-Head Installations) RMK-4000DB Remote Kit (for Dual Band Installations) RMK-4000DBH Remote Kit (for Dual Band plus Dual Head Installations) F2D-8 2-Tone Decode Unit (Requires FIF-7) F5D-14 5-Tone ENC-DEC Unit (Requires FIF-7) VTP-50 VX-Trunk Unit (Requires FIF-7) FVP-25 Band inversion scrambler/DTMF paging Unit (Requires FIF-7) FVP-35 Encryption Unit (Rolling code voice scrambler; Requires FIF-7) MDC1200 Digital ANI encoder Unit (Requires FIF-7) FP-1023 External 23A Power Supply MLS-100 Mobile Loud speaker (12 W Peak Power) MMB-79 Mobile Mounting Bracket MMB-77 Locking Mobile Mounting Bracket FIF-7 Inter face Board (for F2D-8, F5D-14, VTP-50, FVP-25) CN-6 Inter face Board (for Accessories)

B7A C7A A7A B7A

Microphone Heavy Duty Microphone Heavy Duty Microphone w/Noise Canceler Heavy Duty DTMF Microphone w/Noise Canceler

1-8

DSUB 25-PIN ACCESSORY CONNECTOR

DSUB25 output level (V)

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.125

Pin 1: RSSI [Analog Output]

A DC voltage proportional to the strength of the signal currently being received (Receiver Signal Strength Indicator) is provided on this pin. This low impedance output is generated by the receiver IF sub-system and buffered by an internal op-amp. Typical voltages are graphed as follows:

1259 398 125 398 12.5 4 1.25 0.4

SSG Input Level (uV)

Pin 2, 3, 4, 5 & 6: SELECT, DSUB 03, DSUB 04,

DSUB 05 & DSUB 06

[Digital Input Port]

These input port features can be programmed via the CE49 programmer. The same item can not be chosen twice. To select the “Input port” page, (Common à DSUB-25 à Input port).

Pin 2

Pin 4

Pin 6

Pin 3

Pin 5

0.04

Operating Manual Reprint

DSUB 25-Pin Numbering

None MON This feature is the same as pressing

and holding in the Monitor key.

DIMMERLCD illumination dimmer “on.” Hook Activates the Hook1 feature. SCAN Activates the scanner. G-SCAN Activates the Group scanner. RPT INH Disables the repeater feature during

Multi Deck operation.

EMG Activates the Emergency feature. Home Switches to the Home Channel. CH SW0 Memory channel recall

(Channel Switch Table bit 0)

CH SW1 Memory channel recall

(Channel Switch Table bit 1)

CH SW2 Memory channel recall

(Channel Switch Table bit 2)

CH SW3 Memory channel recall

(Channel Switch Table bit 3)

Example

If you assign “CH SW0” and “CH SW1” to the Universal Input Port, you can recall Channels 1~3 as shown below.

Channel CH SW0 CH SW1

1 1 0 2 0 1 3 1 1

LOGIC level (+5V / 0V) input (Low active). High Impedance input.

1-9

Operating Manual Reprint

DSUB 25-Pin

DSUB 25-PIN ACCESSORY CONNECTOR

Similarly, if you assign “CH SW0,” “CH SW1,” and “CH SW2” to the Universal Input Port, you can recall Channels 1~7 as shown below:

Channel CH SW0 CH SW1 CH SW2

1 1 0 0 2 0 1 0 3 1 1 0 4 0 0 1 5 1 0 1 6 0 1 1 7 1 1 1

If you need to recall all memory channels (15 CH) from the External Controller via the Uni-versal Input Port, you should assign the “All Channel Recall” Command (CH SW 0 ~ CH SW 3) to the Universal Input Port. In this case:

Channel CH SW0 CH SW1 CH SW2 CH SW3

1 1 0 0 0 2 0 1 0 0 3 1 1 0 0 4 0 0 1 0 5 1 0 1 0 6 0 1 1 0 7 1 1 1 0 8 0 0 0 1

9 1 0 0 1 10 0 1 0 1 11 1 1 0 1 12 0 0 1 1 13 1 0 1 1 14 0 1 1 1 15 1 1 1 1

The Memory Channel is determined via the CE49 Programmer. (Common à DSUB-25pin connector à Channel switch Table).

47k

DSUB 25-Pin

PINS 2, 3, 4, 6

PIN 5 (Pull Up)

Sample Circuit

Pin 7: E [GND]

Ground for all logic levels and power supply return.

Pin 8: A KEY OUT [Universal Output Port]

Open collector output. Output voltage 0 ~ 5 V, Max. sink current 30 mA. The possible programming features (use CE49) are illustrated below.

A PORT/B PORT/C PORT/D PORT/E PORT/ None

Refer to the “Pins 20, 21, & 22” section for details.

Pin 9: TXD [Digital Output for Alignment software]

Connect to the RS232C cable (requires FIF-8 and CT-88)

Pin 10: RXD [Digital Input for Alignment software]

Connect to the RS232C cable (requires FIF-8 and CT-88)

Pin 11: EXT PTT

Shorting this port to ground causes the transceiver to be placed in the Transmit mode, while opening the connection to this port returns the transceiver to the Receive mode.

1-10

Pin 12: MIC MUTE

MIC mute on: Level High (5V) MIC mute off: Open LOGIC level (+5V / 0V) output. When the PTT/EXT PTT switch is pressed, this pin switches to “open.”

Operating Manual Reprint

DSUB 25-Pin

DSUB 25-PIN ACCESSORY CONNECTOR

Pin 13: TXDI [Digital Input for DATA Communications]

m TX Hi-speed Data Input Type (jumper JP2005).

Input level 800 mV/600 Ohms, Max.input 1.2V

m Tx Low-speed Data input Type (Jumper

JP2006). Input level 40 mV/600-Ohms

If the Jumper setting is “Low-speed Data” (JP2006 jumpered), this port is usable in the AUDIO (300~3000 Hz) range. If the jumper setting is “HI-speed Data” (JP2005 jumpered), this port is usable for 9600 bps DATA communications, because the filter and limiter are not engaged in the Audio line.

Pin 14: DC OUT [13.4 V/5 V DC Output]

m Switched 13.8V output for supplying power

to an accessory (jumper JP2008).

m Switched and regulated DC 5.0V output for

supplying power to an accessory (jumper JP2007). Maximum output current is 200 mA

Pin 15: IGN [Ignition Sense feature]

The VX-6000 may automatically be switched to the STAND-BY mode when the vehicle's igni-tion key is turned on. Maximum current is 20 mA. This feature is only enabled on transceivers configured for Dual Deck operation.

Pin 17: RX DO [Digital Output for DATA Communica-

tions]

m RX Hi-speed Data Output Type (jumper

JP2003). output level 600 mV/10k Ohms

m RX Low-speed Data Output Type (jumper

JP2004). output level 200 mV/600 Ohms

If the Jumper setting is “Low-speed Data” (JP2004 jumpered), this port is usable in the AUDIO (300~3000 Hz) range. If the jumper setting is “HI-speed Data” (JP2003 jumpered), this port is usable for 9600 bps DATA communications, because the filter and limiter are not engaged in the Audio line.

Pin 18: E [GND]

Ground for all logic levels and power supply return.

Pins 19, 20, 21, & 22: DSUB 19, DSUB 20, DSUB 21

and DSUB 22

[Universal Output Port]

LOGIC level (+5V / 0V) output. The logic output appears at these pins when the front panel's PF key is turned on. The possible programming features (use CE49) are illustrated below. If the HA feature is assigned to these ports, a current amplifier must be connected between the Horn circuit and the port.

Ignition 13.8V

Pin 16: NC [NO connection]

None/A PORT/B PORT/C PORT/D PORT/E PORT/HA PORT

Pin 23: EXT SQL [Squelch Signal Output]

Open collector output. Max. sink current 10 mA. A Signal is present (Squelch is open): Level High No Signal is present (Squelch is closed): Open When you connect the solder jumper on J2002, this port changes to PULL UP (5 V) output. This status can be changed by CE49 programmer.

Pin 24: SP MUTE [Speaker Mute Output]

Open collector output. External Speaker mute on: Level High External Speaker mute off: Open

Pin 25: E [GND]

Chassis ground.

1-11

Operating Manual Reprint

Note:

1-12

Cloning

The VX-6000 includes a convenient “Clone” feature,

which allows the programming data from one trans-

ceiver to be transferred to another VX-6000. Here is

the procedure for Cloning one radio’s data to another.

Note: When a cloning isn't made, you correct the following part using "CE49." When a "Radio to Radio Clone" which is in the "Miscellaneous" menu is "Disabled," change this menu to "Enabled."

1. Turn both transceivers off.

2. Remove the plastic cap and its two mounting

screws from the MIC/SP jack on the transceiv-

er. Do this for both transceivers.

3. Connect the optional CT-72 cloning cable between the MIC/SP jacks of the two transceivers.

4. On the Destination transceiver, press and hold

the PF Button (just below the POWER Button)

while turning the transceiver on.

5. Now, on the source transceiver, press and hold

the q Button while turning the transceiver

on.Data will now be transferred to the Destina- tion transceiver from the source transceiver.

6. If there is a problem during the cloning process, sound an error beep from source the transceiver. Check your cable connections and battery voltage, and try again.

7. If cloning is a successful, turn the Destination transceiver off. Now turn the source transceiver off.

8. Disconnect the CT-72. Replace the plastic cap

and its two mounting screws.

9. You can then turn the transceivers back on, and begin normal operation.

Optional Cloning Cable

CT-72

POWERPOWER

Destination source

DealerProgramming of VTP-50 and F5D-14

These procedures are designed to be used by the installing technician after the VTP-50 and F5D-14 has been installed in the transceiver. To program a VX-6000's VTP-50 and F5D-14 board, you will need the CT-71 programming interface cable, the CE-26 Programming diskette, and an IBM PC/AT or PS/2-

compatible type computer.

To enter the Programming mode, use the following procedure:

1. Turn the transceiver off.

2. Turn on the transceiver while holding in the

PF Button (just below the q Button).

POWER

2-1

Specifications

GENERAL

Number of Channels: 250 channels

Frequency Range: 37.0 - 50 MHz

Channel Spacing: 5 / 10 / 12.5 / 15 / 20 / 25 / 50 kHz

Power Supply Voltage: 13.4 VDC

Current Consumption: Standby: 500 mA

Receive: 2.5 A

Transmit: 22 A

Ambient Temperature Range: –22°F to +140°F (–30°C to +60°C)

Frequency Stability: Better than ±5.0 ppm

RF Input-Output Impedance: 50 Ohms

Audio Output Impedance: 4 Ohms

Dimensions: 7" (w) x 2.4" (H)x 11.9" (D) (178 x 60 x 301 mm)

Weight: 15.4 lbs. (7.0 kg)

RECEIVER (Measurements made per EIA standard TIA/EIA-603)

Circuit Type: Double-conversion Super-heterodyne

Sensitivity(EIA 12 dB SINAD): 0.25 µV

Adjacent Channel Selectivity: 85 dB

Intermodulation: 80 dB

Spurious and Image Rejection: 85 dB

Audio Response: +3 / –8 dB from the 6 dB / oct. re-emphasis curve

Audio Output: 5 W @ 4 Ohms, 10 % THD

10 W @ 4 Ohms w/<10 % THD (Option)

TRANSMITTER (Measurements made per EIA standard TIA/EIA-603)

Power Output: 120 / 50 W

Modulation: 16K0F3E, 11K0F3E

Max Deviation: 5.0 kHz

Conducted Spurious Emissions: 70 dB Below Carrier

FM Hum & Noise: 45 dB (25 kHz)

Audio Response: +1 / –3 dB from the 6 dB / oct-8

Audio Distortion (@ 1 kHz): < 5 %

Measurements per EIA standards unless noted above.

Specifications subject to change without notice or obligation.

2-2

Exploded View & Miscellaneous Parts

Screw List

REF. VXSTD P/N Description Qty.

1 U20306007 BINDING HEAD SCREW M3x6B 7 2 U20306002 BINDING HEAD SCREW M3x6NI 6 3 U24308002 TAPTITE SCREW M3x8NI 17 4 U23206001 TAPTITE SCREW M2.6x6 14 5 U20305007 BINDING HEAD SCREW M3x5B 2 6 U32450007 FLAT HEAD SCREW M2.6x5B 2 7 U31306007 OVAL HEAD SCREW M3x6B 2 8 U02308002 SEMS SCREW SM3x8NI 4

9 S5000182 SCREW JFS-4S-B1MW 2 10 U04306002 SEMS SCREW HSM3x6NI 3 11 U20312002 BINDING HEAD SCREW M3x12NI 5

Accessories Description VXSTD P/N Qty. DC CABLE 04P 40AX2 T9023140 1 KNOB CAP RA0254100 5 NAME PLATE RA0254700 1

DISPLAY Unit

RA0252800 DIFFUSER SHEET

G6090140 LCD

RA0253000 LCD HOLDER

VR Unit

VR3601*

RA0254000 RUBBER KNOB (PWR)

RA0254200 RUBBER PACKING

RA0378900 PANEL ASSY

Supplide is VR3601*

RA02543A0 KNOB

RA0254300 KNOB

R6054387B SPECIAL NUT

RA0252700 REFLECTOR SHEET

RA0275500 RUBBER KNOB ASSY

R0134490 HOLDER

MIC CONN Unit

M4090133 SPEAKER

KEY Unit

RA0253900 RUBBER KNOB (CH)

RA0445900 HEATSINK PLATE

MAIN Unit

MIC CONN Unit

RA0252300 LIGHT GUIDE

RA0252900 RUBBER CONNECTOR

R0145680 FITTING (x4 pcs)

RA025480A CONTACT ASSY (Both Side)

Non-designated parts are available only as part of a designated assembly.

RA0332800 CASE

T9206926 WIRE ASSY

S6000395 COVER P-25P(23)

RA0262300

S6000396

RA020830A DOUBLE FACE (Both Side)

RA0215400 SHEET

RUBBER GROMMET TM-96-17

P1090654 CONNECTOR (W/ *A)

RA0446000 HEATSINK PLATE

RA0445800 CHASSIS

HOLDER PLATE

P1090984 CONNECTOR

RA0215000 EXT CAP

3-1

Block Diagram

3-2

Block Diagram

3-3

Interconnection Diagram

3-4

Circuit Description

Transceiver functions, such as PLL synthesizer settings and channel programming, are controlled via the microprocessor unit (MPU). Reception and transmission are switched by "RX" and "TX" lines, also controlled from the MPU.

Signal Path Overview

The receiver uses double-conversion superheterodyne circuitry, with a 17.7 MHz 1st IF and 450 kHz 2nd IF. The 1st LO, produced by a PLL synthesizer, yields the 17.7 MHz 1st IF. The 2nd LO uses a

17.25 MHz (17.7 MHz - 450 kHz) signal generated by a crystal oscillator. The 2nd mixer and other circuits use a custom IC to convert and amplify the 2nd IF, and detect FM to obtain demodulated signals. During transmit, the PLL synthesizer oscillates at the desired frequency directly, for amplification to obtain RF power output. During transmit, voice modulation and CTCSS (or DCS) modulation are applied to this synthesizer. Transceiver functions, such as TX/RX control, PLL synthesizer settings, and channel programming, are controlled using the MPU.

Receiver

Incoming RF signals from the antenna connector are delivered to the PA Unit, and pass through a low-pass filter (LPF) network consisting of coils L6011, L6010, and L6009, capacitors C6047, C6045, C6044, C6075, C6043, C6042 and C6074, and antenna switching relay RL6001 for delivery to the receiver front end in the MAIN Unit.

Signals within the frequency range of the transceiver are then passed through a varactor-tuned band-pass filter consisting of T1001/T1002/T1003 and T1004 before RF amplification by Q1006

(GN010100R).

The amplified RF is then band-pass filtered again by varactor-tuned resonators T1001, T1002, T1003 and T1004 to ensure pure in-band input to the 1st

mixer 1040 (SPM5001).

Buffered output from the VCO Unit is amplified

by Q1021 (2SC5107) and low-pass filtered by L1030,

L1020 and C1161, C1152, C1143 to provide a pure 1st local signal between 54.7 and 67.7 MHz for input to the 1st mixer.

The 17.7 MHz 1st mixer product then passes through dual monolithic crystal filters XF1001 and XF1002 (12 kHz BW), and is amplified by Q1035

(2SC4215) and delivered to the input of the FM IF subsystem IC Q1034 (TA31136FN). This IC contains

the 2nd mixer, 2nd local oscillator, limiter amplifier, FM detector, noise amplifier, and squelch gate.

The 2nd LO in the IF-IC is produced from crystal X1001 (17.25 MHz), and the 1st IF is converted to

450 kHz by the 2nd mixer and stripped of unwanted components by ceramic filter CF1001. After passing through a limiter amplifier, the signal is demodulated by the FM detector.

Demodulated receive audio from the IF-IC is

amplified by Q2019 (CXA1846N). After volume ad-

justment by the AF power amplifier Q2018

(TDA7240AV), the audio signal is passed to the

speaker jack or the internal 4-Ohm loudspeaker.

PLL Synthesizer

The 1st LO, a PLL synthesizer, maintains stabili-

ty using a 17.25 MHz reference signal from crystal

X1001. PLL synthesizer IC Q1029 (SA7025DK) con-

sists of a prescaler, reference counter, swallow counter, programmable counter, a serial data input port to set these counters based on the external data, a phase comparator, and charge pump. The PLL-IC divides the 17.25 MHz reference signal by 1725 using the reference counter (10.0 kHz comparison frequency). The phase detector comparison frequency is designed to be two times the channel spacing (5 kHz). The VCO output is divided by the prescaler, swallow counter and programmable counter. These two signals are compared by the phase comparator and sent to the charge pump. A voltage proportional to their phase difference is delivered to the lowpass filter circuit, then fed back to the VCO as a voltage with phase error, controlling and stabilizing the oscillating frequency. This synthesizer also operates as a modulator during transmit.

The RX-VCO is composed of Q1015 (2SK508) and

D1016/D1017 (HVU306AX2), and oscillates be-tween

54.7 MHz and 67.7 MHz according to the programmed receiving frequency. And the TX-VCO is

comprised of Q1016 (2SC4226) and D1012, D1013, D1014, D1015 (HVU300AX4), and oscillates between

37.0 MHz and 50.0 MHz according to the programmed transmit frequency. The VCO output pass-

es through buffer amplifier Q1021 (2SC5107), and

a portion is fed to the buffer amplifier Q1023

(2SC4215) of the PLL IC, and at the same time amplified by Q1027 (2SC5415) to obtain stable output.

The VCO DC supply is regulated by Q1007

(2SC4154E). Synthesizer output is fed to the 1st mixer by diode switch D1022 (1SS321) during receive,

and for transmit. The reference oscillator feeds the PLL synthesizer, and is composed of crystal X1001 (17.25 MHz), the temperature compensation circuit

which includes D1028 (MC2850) ,D1026(HVU306A)

and thermostats TH1001 and TH1002, and transmit

(DCS) modulation circuit D1025, D1029(HVU306A

X2).

4-1

Circuit Description

Transmitter

Voice audio from the microphone is delivered via

the Mic (Jack) Unit to the MAIN Unit, after passing

through amplifier Q3039/Q2108 (NJM2902V), pre-

emphasis, limiter (IDC instantaneous deviation con-

trol), and LPF Q2001 (NJM2902V); the signal is ad-

justed for optimum deviation level and delivered to the next stage.

Voice inputs from the microphone and CTCSS are frequency-modulated to the VCO of the synthesizer, while DCS audio is modulated by the reference frequency oscillator of the synthesizer.

Synthesizer output, after passing through diode

switch D1022 (1SS321), to obtain the required RF

drive prior to delivery to the PA Unit. There the RF signal is amplified by parallel junction transistors

Q6006/Q6007 (SD1405X2) and passes through an-

tenna switching relay RL6001 and a low-pass filter circuit, and ultimately to the antenna connector.

RF output power from the final amplifier is sampled by a CM coupler and is rectified by D6006/

D6007 (MA729X2). The resulting DC is fed through Automatic Power Controller Q1038 (NJM2902V), Q1001 (2SC4154E), Q1004 (2SB1132Q) to control

the gain of the transmitter RF amplifier and thus regulate the power output.

Generation of spurious products by the transmitter is minimized by the fundamental carrier frequency being equal to the final transmitting frequency, modulated directly in the transmit VCO. Additional harmonic suppression is provided by a low-pass filter consisting of L6009/L6010/L6011 and C6042/ C6043/C6044/C6047/C6074/C6075 and C6045, resulting in more than 65 dB of harmonic suppression prior to delivery of the RF energy to the antenna.

DCS Demodulator

DCS signals are demodulated on the MAIN-

UNIT, and are applied to low-pass filter Q2110

(NJM2902V), as well as the limiter comparator Q2110 (NJM2902V).

CTCSS Encoder/Decoder

The CTCSS code is generated and encoded by

MPU IC Q2019 (MB90F583B). Demodulation and

detection of the CTCSS tones are carried out by IC

Q2013 (MX165C).

MPU

Operation is controlled by 16-bit MPU IC Q2026

(MB90F583B). The system clock uses a 16.000 MHz crystal for a time base. IC Q2036 (RN5VL35AA) re-

sets the MPU when the power is on, and monitors the voltage of the regulated 5V power supply line.

EEPROM

The EEPROM retains Tx and Rx data for all memory channels, as well as CTCSS data, DCS data, prescaler dividing, and REF oscillator data (internal/external).

4-2

Alignment

The VX-6000 has been carefully aligned at the factory for the specified performance across the frequency range specified for each version.

Realignment should therefore not be necessary except in the event of a component failure, or when altering the transceiver version. If a sudden problem occurs during normal operation, it is likely due to component failure; realignment should not be done until after the faulty component has been replaced. All component replacement and service should be performed only by an authorized

VERTEX STANDARD representative, or the warran-

ty policy may be voided. Therefore, if a fault is suspected, contact the dealer from whom the transceiver was purchased for instructions regarding repair.

Authorized VERTEX STANDARD service tech-

nicians realign all circuits and make complete performance checks to ensure compliance with factory specifications after replacing any faulty components. Those who do undertake any of the following alignments are cautioned to proceed at their own risk. Problems caused by unauthorized attempts at realignment are not covered by the warranty policy.

Also, VERTEX STANDARD must reserve the right

to change circuits and alignment procedures in the interest of improved performance, without notifying owners.

Under no circumstances should any alignment be attempted unless the normal function and operation of the transceiver are clearly understood, the cause of the malfunction has been clearly pinpointed and any faulty components replaced, and the need for realignment determined to be absolutely necessary.

Required Test Equipment

The following test equipment (and thorough familiarity with its correct use) is necessary for complete realignment. Correction of problems caused by misalignment resulting from use of improper test equipment is not covered under the warranty policy.

While most steps do not require all of the equipment listed, the interactions of some adjustments may require that more complex adjustments be performed afterwards. Do not attempt to perform only a single step unless it is clearly isolated electrically from all other steps. Have all test equipment ready before beginning, and follow all of the steps in a section in the order presented.

r RF signal generator: calibrated output level at

1000 MHz

r Deviation Meter (linear detector) r AF Millivoltmeter r SINAD Meter r Inline Wattmeter with 5% accuracy at 1000 MHz r Regulated DC Power Supply: adjustable from 10

to 17 VDC, 35A

r 50-ohm non-reactive Dummy Load: 200 W at 1000

MHz

r Frequency Counter: <0.1 ppm accuracy at 1000

MHz

r AF Signal Generator r DC Voltmeter: high impedance r RF Sampling Coupler (attenuation pad) r AF Dummy Load: 4 ohms, 20W r Oscilloscope r Spectrum Analyzer r IBM PC-compatible computer w/VERTEX

STADARD CT-71 programming cable and CE49 channel programming editor.

Alignment Preparation & Precautions

A dummy load and inline wattmeter must be connected to the main antenna jack in all procedures that call for transmission, except where specified otherwise. Correct alignment is not possible with an antenna. After completing one step, read the following step to determine whether the same test equipment will be required. If not, remove the test equipment (except dummy load and wattmeter, if connected) before proceeding.

Correct alignment requires that the ambient temperature be the same as that of the transceiver and test equipment, and that this temperature be held constant between 68° and 86°F (20° ~ 30°C). When the transceiver is brought into the shop from hot or cold air it should be allowed some time for thermal equalization with the environment before alignment. If possible, alignments should be made with oscillator shields and circuit boards firmly affixed in place. Also, the test equipment must be thoroughly warmed up before beginning.

5-1

2-ohm

Attenuated

Test Output(1/2)

Alignment

Before beginning, connect the transceiver and PC using the CT-71 programming cable, and download the EEPROM data from the transceiver to the computer.

Store this data in a disk file so that it can be saved and retrieved later. Using the table below, program the channel, CTCSS, and DCS alignment settings for your transceiver version. Upload this file to the transceiver.

Note:Signal levels in dB referred to in this proce-

dure are based on 0 dBµ = 0.5 µV (closed circuit).

Caution:Do not connect the audio output line to

ground, and be certain that the speaker has adequate capability to handle the audio output from the radio. Because of the bridge audio amplifier circuit used in the radio, it is necessary to construct and use a simple audio load test adapter as shown in the schematic diagram below, when conducting receiver alignment steps.

3.5 PLUG

10W

GND

2-ohm 10W

(4-ohm Dummy Load)

470uF

Alignment Channel Frequencies

Channel

CH1 37.0 MHz None None

CH2 43.5 MHz None None

CH3 50.0 MHz None None

CH4 43.5 MHz 151.4 Hz None

CH5 43.5 MHz None 023

Frequency CTCSS DCS

(simplex) Encode Encode

PLL & Transmitter

Set up the test equipment as shown for transmit-

ter alignment.

Maintain the supply voltage at 13.4 V DC for all

steps.

50-Ohm

Dummy Load

RF Signal Generator

Inline Wattmeter

Deviation Meter

Frequency

Counter

RF Sampling

Coupler

CT-71 connection Cable

COM port

Transceiver

Power Supply

13.4V DC

PLL VCV

r Connect the positive lead of the DC voltmeter to

test point TP1010 (VCV) on the Main Unit, as in-

dicated in the figure, and connect the negative lead to chassis ground.

r Set the transceiver to the low band edge fre-

quency channel (CH1), then adjust T1005 on the

Main Unit for 7.0 ± 0.1 V on the voltmeter.

r Key the transmitter, and adjust T1006 on the Main

Unit for 7.0 ± 0.1 V on the voltmeter.

r Next select to the low edge frequency channel

(CH1) and confirm the VCV is 1.6 ± 0.3 V on the voltmeter.

r Key the transmitter, and confirm the VCV is 1.7 ±

0.3 V on the voltmeter.

PLL Reference Frequency

With the wattmeter, dummy load and frequency counter connected to the antenna jack, select the band center frequency channel (CH2) and select the “low” power output level.

Key the transmitter, and adjust TC1001 on the

Main Unit, if necessary, so the counter frequency is within 100 Hz of the channel center frequency for the transceiver version.

5-2

Alignment

Transmitter Output Power

The following transmitter parameters can be adjusted from the computer by utilizing the Alignment Software. Refer to the onboard help of the Alignment Software Manual for details.

r Select the band center frequency channel (CH2),

and select the “high” power output level.

Key the transmitter and adjust “TX PWR Hi“ for a

power output of 120 Watts (± 3.0 W) as indicated

on the wattmeter. r Stay on the band center frequency channel (CH2),

and select the “low” power output level.

Key the transmitter and adjust “TX PWR L3“ for

a power level of 50 Watts (± 2.0 W) as indicated

on the wattmeter.

Transmitter Deviation

The following modulation parameters can be adjusted from the computer by utilizing the Alignment Software. Refer to the onboard help of the Alignment Software Manual for details.

Microphone Audio Modulation Level

r Select the band center frequency channel (CH2),

and select the “low” power output level. r Adjust the AF generator for 50mV (–30dBm) out-

put at 1 kHz, as applied to the microphone jack. r Key the transmitter and adjust “MAX Dev (wide)“

for maxi-mum deviation of ±4.2 kHz ± 0.2 kHz as

indicated on the deviation meter.

TP1010T1005T1006 TC1001

5-3

Alignment

Power Supply

CTCSS Modulation Level

r Select the “low” power output level. r Select the band center frequency channel (CH4),

with 151.4 Hz CTCSS encode, and reduce the AF generator injection to zero.

r Key the transmitter and adjust “CTCSS Dev (wide)“

for CTCSS deviation of ±0.75 kHz (± 0.1 kHz) as indicated on the deviation meter.

DCS Modulation Level

r Select the “low” power output level. r Select the band center frequency channel (CH5),

with 023 DCS code, and reduce the AF generator injection to zero.

r Key the transmitter and adjust “DCS Dev (wide)“

for DCS deviation of ±0.75 kHz (± 0.1 kHz) as indicated on the deviation meter.

Receiver

The sensitivity parameters can be adjusted from the computer by utilizing the Alignment Software. Refer to the onboard help of the Alignment Software Manual for details.

r Set up the test equipment as shown for receiver

alignment, and install the audio test adapter.

50-Ohm

Dummy Load

Inline

Wattmeter

Deviation

Meter

Frequency

Counter

RF Sampling

Coupler

CT-71 Connection Cable

AC Volt

Meter

RF Signal Generator

13.8V DC

13.4

Transceiver

AF Generator

SINAD

Meter

AF Test

Adapter

T1002T1003T1004 T1001

5-4

r With the transceiver set to the band center fre-

quency channel (CH2), and with the RF signal generator tuned to the same frequency, set the generator for ±3.0 kHz deviation with 1 kHz tone modulation, and set the output level for –6.0 dBµ at the antenna jack.

r Adjust T1001, T1001, T1001 and T1004 the re-

ceiver front-end tuning for optimum SINAD, reducing signal generator output level as necessary for proper meter deflection.

r After the previous step, the final signal genera-

tor level should be less than –6 dBµ for 12dB SINAD.

r With the transceiver set to the band high fre-

quency channel (CH3), and with the RF signal generator tuned to the same frequency, set the generator for ±3.0 kHz deviation with 1 kHz tone modulation, and set the output level for –6.0 dBµ at the antenna jack.

r After the previous step, and confirm the final sig-

nal generator level should be less than –6 dBµ for 12dB SINAD.

r With the transceiver set to the band low frequency

channel (CH1), and with the RF signal generator tuned to the same frequency, set the generator for ±3.0 kHz deviation with 1 kHz tone modulation, and set the output level for –5.0 dBµ at the antenna jack.

r After the previous step, and confirm the final sig-

nal generator level should be less than –5 dBµ for 12dB SINAD.

Squelch Threshold

The squelch parameters can also be adjusted from the computer by utilizing the Alignment Software. Refer to the onboard help of the Alignment Software Manual for details.

Tight SQL RSSI LEVEL

r Select the band center frequency channel (CH2),

and with the RF signal generator turned to the

same frequency, set the generator for ±3.0 kHz

deviation with 1 kHz tone modulation, and set

the output level for 12.0 dBµ at the antenna jack.

Threshold NSQ LEVEL

r Select the band center frequency channel (CH2),

and with the RF signal generator turned to the

same frequency, set the generator for ±3.0 kHz

deviation with 1 kHz tone modulation, and set

the output level for –6.0 dBµ at the antenna jack.

Tight SQL NSQ LEVEL

r Select the band center frequency channel (CH2),

and with the RF signal generator turned to the

same frequency, set the generator for ±3.0 kHz

deviation with 1 kHz tone modulation, and set

the output level for 6.0 dBµ at the antenna jack.

5-5

Circuit Diagram

MAIN Unit

2.3V

2.75V (2.45V)

0.4V

0V (8.8V)

5 ~ 7V

7.7V (7.9V)

-2 dBm

2.5V (2.5V)

+8 dBm (+12 dBm)

(0 dBm)

3.4V

(1.6V)

0V (5.6V)

5V (5V)

(5.6V)

(2.06V)

(1.0V)

(0.64V)

-119 dBm

2.0V (2.0V)

8.9V (8.9V)

0V (3.5V)

8V (8V)

0V (8.8V)

3.5V (4.95V)

-116 dBm

4.0V (3.7V)

0V (0.9V)

0V (4.7V)

0V (5V)

NB on:(5V) NB off:(0V)

4.5V (4.5V)

(3.9V)

(1.7V)

2V (2V)

LOCK:4.9V

0V (8.7V)

0V (4.3V)

(0V)

(2.2V)

(0.03V)

0V (5V)

(2V)

XX : TX 43.5 MHz, MIC Input Level 1 kHz 3.0mVrms (STD Dev), High Power (XX) : RX 43.5 MHz, RF Input Level 40dbµ emf (MOD=1.0 kHz, Dev=3.0 kHz), EXT SP OUT 10% Distn 14.0W [XX] : Noise Blanker ON

6A-1

+ 60 hidden pages

Vertex Standard VX-6000L Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Contents

Front Panel

Operating Manual Reprint

CONTROLS & CONNECTORS

Side Panel

REAR (Heatsink)

BASIC OPERATION OF THE TRANSCEIVER

ADVANCED OPERATION

OPTIONAL ACCESSORIES

DSUB 25-PIN ACCESSORY CONNECTOR

Cloning

Specifications

GENERAL

Exploded View & Miscellaneous Parts

Block Diagram

Interconnection Diagram

Circuit Description

Signal Path Overview

Receiver

PLL Synthesizer

Transmitter

DCS Demodulator

CTCSS Encoder/Decoder

EEPROM

Alignment

Required Test Equipment

Alignment Preparation & Precautions

Alignment Channel Frequencies

PLL & Transmitter

PLL VCV

PLL Reference Frequency

Transmitter Output Power

Transmitter Deviation

Microphone Audio Modulation Level

CTCSS Modulation Level

DCS Modulation Level

Receiver

Squelch Threshold

Circuit Diagram

MAIN Unit