Apelco VHF-5200 User manual

PURPOSE

THIS MANUAL CONTAINS IMPORTANT INFORMATION ON THE INSTALLATION, OPERATION,

AND MAINTENANCE OF YOUR EQUIPMENT.

*******IMPORTANT NOTICE*******

THIS DEVICE IS ONLY AN AID TO BOATING SAFETY AND NAVIGATION. IT’S PERFORMANCE
CAN BE AFFECTED BY MANY FACTORS INCLUDING EQUIPMENT FAILURE OR DEFECT,

ENVIRONMENTAL CONDITIONS, AND IMPROPER HANDLING OR USE. IT IS THE USER’S

RESPONSIBILITY TO EXERCISE COMMON PRUDENCE AND NAVIGATIONAL JUDGMENT, AND
THIS DEVICE SHOULD NOT BE RELIED UPON AS A SUBSTITUTE FOR SUCH PRUDENCE AND
JUDGMENT.

APELCO MARINE COMPANY products are supported by a network of Authorized Service

Representatives. For product information, you may contact the following regional centers:

UnitedStates

. . . . . . . . . . . . . . .

Apelco Marine Company

676 Island Pond Rd.

Manchester, N.H. 03109
Phone: [phone]

Europe.. . . . . . . . . . . . . . . . . . . . . . . .

Raytheon Marine Europe

AnchoragePark

Portsmouth, Hampshire
PO3 6TD
United Kingdom
Phone: 44-(O) 705693611

NOTE

“This device complies with PART 15 of the FCC Rules.

Operation is subject to the conditions that this

device does not cause harmful interference.”

i

TABLE OF CONTENTS

SECTION 1 GENERAL DESCRIPTION

1 .I INTRODUCTION

.............................................................................................................

,

,‘J

EQUIPMENT

F&,TURES

...................................................................................................

1

SECTION 2 INSTALLATION

2.1 UNPACKING AND INSPECTION

..........................................................................................

2

2.2 EQUIPMENT SUPPLIED

.......................................................................................................

2

2.2.1 Optional Accessories

...................................................................................................

2

2.3 PLANNING THE INSTALLATION

..........................................................................................

3

2.3.1 Typical Mounting Methods

.............................................................................................

3

2.3.2 Flush Mounting

............................................................................................................

4

2.4 ELECTRICAL CONNECTIONS

.............................................................................................

6

2.4.1 DC Power Connections

................................................................................................

6

2.4.2 External Speaker Connections

.......................................................................................

7

2.4.3 Antenna Connections

...................................................................................................

8

2.4.4 Antenna Mounting Suggestions

....................................................................................

8

2.4.5 Grounding

..................................................................................................................

8

SECTION 3 OPERATIONS

3.1 INTRODUCTION

...............................................................................................................

9

3.2 CONTROLS AND LCD DISPLAY’

.........................................................................................

9

3.2.1 Controls

....................................................................................................................

9

3.2.2 LCD Display

..............................................................................................................

11

3.3

OPERATING pROCED,,RES..

...........................................................................................

11

3.3.1 Turning the Power on

...................................................................................................

12

3.3.2

The

16pLUS

(prioff)Channel..

.....................................................................................

12

3.3.3 Channel Memory

......................................................................................................

13

3.3.4 Scan Mode

...............................................................................................................

13

3.3.5 Master

Reset------+

.............................................................................................

13

3.3.6 Monitor Mode

................................................................................................................

1.3

3.3.7 VHF 5200 Marine Channels and their usage

..................................................................

1J

SECTION 4 TECHNICAL DESCRIPTION

4.1

GENERAL.. ....................................................................................................................

I6

4.2

J-HE

CONTROL SECTION .............................................................................................

16

ii

4.3 THE TRANSMITTER/RECEIVER/PLL SECTION

.....................................................................

l(j

4.3.1 PLL(Phase Lock Loop)

................................................................................................

17

4.3.2

T~nsmi~erCircu~.

.....................................................................................................

17

4.3.3

Rece~erCir&

.........................................................................................................

17

4.4 SpEfJFCATlONS..

.......................................................................................................... I()

SECTION 5 MAINTENANCE AND ALIGNMENTS

5.1 GENERAL

........................................................................................................................

2,

5.1 .I Product Support and Customer

Se&ice

........................................................................

21

5.2 PREVENTIVE MAINTENANCE

..........................................................................................

21

5.3 ALIGNMENTS AND SERVICE

.............................................................................................

22

5.3.1

PLLAdjusment.. .......................................................................................................

23

5.3.2 Frequency Adjustment

.................................................................................................

2.3

5.3.3 Modulation Adjustment

................................................................................................

23

5.3.4

PowerOutputAdjustment .............................................................................................

24

5.3.5

RFSensi~~tyAdjustmefi

..........................................................................................

24

5.3.6 Weather Alert Frequency Adjustment (RECEIVER)

......................................................

24

5.4 TROUBLESHOOTING GUIDE

.......................................................................................

25

SECTION 6 PARTS LIST & DRAWINGS

6.1 PARTS LOCATION LIST

................................................................................................... 27

6.2 ASSEMBLY DRAWlNG

......................................................................................................

21)

6.3 BLOCK DlAG&5J,&pC BOARDS ......................................................................................

3 1

6.4 INTERNAL WIRING DIAGRAM

..........................................................................................

33

SECTION 7 APPENDIX

7.1

VHF MARINE CHANNEL USAGE GUIDE AND

LICENSING

REQUIREMENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34

GLOSSARY OF TERMS

VHF

.........................................................

FM

.........................................................

MODU~TlON .............................................

CARRIERWAVE ..........................................

DUAL WATCH .............................................

U.S.A.CHANNELS

.......................................

INTERNATIONAL CHANNELS ........................

CANAj-JAN CHANNELS .................................

WEATHER

CHANNELS............................

SIMpLU( ...................................................

DUpLu(

...................................................

SQUELCH

...................................................

LCD

.........................................................

TX

............................................................

Rx

.........................................................

RF

............................................................

CPU

.........................................................

PLL

......................................................

vco

......................................................

PTT SWITCH

.............................................

Very High Frequency (30MHz to 300MHz).
Frequency Modulation.
To vary a carrier wave.

A radio frequency on which intelligence is superimposed.

Monitors channel 16 while working on another channel.
Channel designations as defined by the FCC.
Channel designations as defined by the international
Telecommunication Union.
Channel designation as defined by the IC.
Channels for routine and emergency weather information
broadcast by NOAA.

Transmit and receive on the same frequency.
Transmit and receive on different frequencies.
To suppress totally.
Liquid crystal display.

Transmit.
Receive.
Radio Frequency.
Control Processor Unit.
Phase Lock Loop (A type of Frequency Synthesizer).
Voltage Controlled Oscillator.
Microphone push-to-talk swith.

iV

SECTION

I

GENERAL DESCRIPTION

1 .I INTRODUCTION

Congratulations on your purchase of Apelco’sVHF5200 marine radiotelephone.

The VHF5200 is a CPU-controlled, digitally synthesized, compact transceiver which provides

reliable simplex and duplex (two-frequency) communications between ships and from ships at
sea to public or private shore stations. The VHF5200 provides two-way communications on

the International and US channels, reception on 10 separate weather channels, and two-way

communications on the International calling and safety channel (16).

This manual describes the physical and functional characteristics of the radiotelephone.

1.2 EQUIPMENT FEATURES

The VHF5200 is designed and manufactured to provide ease of operation with excellent reli-

ability. The important built-in features of the equipment are listed below:

.

.

.

.

.

.

.

.

.

.

Waterproofto U.S.C.G. standard CFR-46.
All solid-state circuitry for low current drain and maximum reliability.

Series diode protection on input power circuits to prevent reverse polarity damage.

High-performance receiver section with optimum selectivity.

53 channel transmit and 93 channel receive capability within the assigned VHF-FM maritime
band. All US and International channels are included.

Exclusive circuit that automatically selects 16 PLUS (priority) channel when the radio is

turned on.

Exclusive weather alert feature (when in monitor mode).
Selected channel number indicated on the LCD digital display.
Key entries for “Quick” 16 PLUS, and 10 weather channels WXO through WX9.

All-Scan and Memory Scan features.

1

SECTION 2

INSTALLATION

2.1 UNPACKING AND INSPECTION

Use care when unpacking the unit from the shipping carton to prevent damage to the contents,
It is also good practice to save the carton and the interior packing material. The original pack­ing material should be used in the unlikely event it is/necessary to return the unit to the factory.

2.2 EQUIPMENT SUPPLIED

The following is a list of materials supplied with the VHF5200:

Description

Radiotelephone

Instruction Manual

Microphone Bracket w/hardware

Power/External Speaker Cable

FCC Instruction

Mounting Yoke

Yoke Knob

Yoke Knob Spacer

22.1

OptionalAccessories

Part No.

M56797

G623682-1

G623680-2

G623680-3

FCC Form 506

G623680-4

G623680-5

G623680-6

Table 2.2 Optional Accessories

These optional accessories may be ordered by calling your Apelco dealer or our Customer Service
Department directly at [phone]ext. 2120 Monday through Friday 8:30 a.m. - 5:00 p.m. E.S.T.

2

2.3 PLANNING THE INSTALLATION

When planning the installation for your VHF5200, the following conditions should be consid­ered to insure dependable and trouble-free operation.

.

The mounting location should be easily accessible to allow operation of the front panel.

l

There should be adequate ventilation for the control unit.

l

A sufficient space should be secured behind the transceiver to allow for proper cable

connections to the rear panel connectors.

l

The transceiver should be located as

nearto

the power source as possible.

l

The selected location should be as far apart as is possible from any devices that may cause

interference such as motors, generators, and other on board electronics.

l

Generally speaking, the transceiver should be protected from prolonged direct exposure to
rain and salt spray.

It is always a good practice to protect your valuable electronic equipment

as much

as

possible.

.

Use adequate sized wire for all DC power connections and make sure to solder all in-line

connectors or splices.

2.3.1 Typical Mounting Methods

The VHF5200 can be conveniently mounted on a chart table, bulkhead, overhead, or any other
desired location. (Refer to Figure 2-1 for typical mounting methods)

(table

top mount)

(bulkhead mount)

(overhead mount)

Fig. 2-1 TYPICAL MOUNTING METHODS

3

2.3.2 Flush Mounting
In addition to the Typical Mounting Methods, the VHF5200 may also be flush mounted using the

optional Flush Mount kit (M99-113).
These kits are available from your Apelco dealer or our Customer Service Department.

1) Select the location for the VHF. A clear, flat area, of sufficient height having at least 6” of clear
depth behind the panel is required.

2) Unpack the Flush Mount kit and confirm that all hardware is present.

3) Place the ring at the desired location on the panel. Using the inside of the trim ring, trace
a cutout guide. Remove the trim ring.

4) Drill a pilot hole inside of the cutout guide area.

5) Using an appropriate saw, cut along the outside of the cutout line.

6) Remove the yoke knobs and the bracket from the VHF cabinet. Check that the VHF will
fit into the cutout area.

7) Install the power and antenna cables in the console.

8) Insert the trim ring in the console cutout and secure in place with the countersunk flat
head screws. A suitable sealant may be used between the trim ring and console to

prevent moisture entry. Position the radio in the trim ring and secure in place with the two
hex-head bolts and washers supplied.

9) Connect the power/external speaker and antenna cables.

CAUTION

Make sure there are no hidden electrical wires or other items behind the desired location

before proceeding.Check that free access for mounting and cabling is available.

Washer

Fig.2-2 FLUSH MOUNTING

4

i i

ig

i

igi
F-1

1

i i

!

i i

i

/

:

I

+

:-

b+!ff!f

J

t

J-

TgY

i

.---

-.---

--

Fig. 2-3 OUTLINE AND MOUNTING DIMENSIONS

All dimensions are shown in (inches) and millimeters

5

2.4 ELECTRICAL CONNECTIONS

ANTENNA JACK

POWER/EXTERNAL: SPEAKER CABLE

Fig. 2-4 REAR VIEW

/

CAUTION

DO NOT INSTALL THIS RADIO ON VESSELS WITH POSITIVE GROUND BATTERY

SYSTEMS.

2.4.1 DC PowerConnections

The power cable comes with external speaker attachments. The power/external speaker
cable provided

is&

fee3ong and plugs into the 4 pin connector cable at the rear panel of the

radio. The RED (+) wire with an in-line fuse (10 amps) and the BLACK (-) wire of the 4 pin
connector cable are used for connecting the VHF5200 to the ship’s 12 VDC power system.
(Refer to Fig. 2-4)

POWER/EXTERNAL

SPEAKER CABLE

CON

RED

,-(-DC INPUT+)

BLACK
(DC INPUT-)

YELLOW
(SPEAKER+)

*GREEN

'Nl3CTOR

CABLE

(SPEAKER-)

Fig. 2-5 POWER/EXTERNAL SPEAKER CABLE AND 4 PIN CONNECTOR CABLE

6

In most cases, the length of the supplied cable should be adequate to reach the DC power
source. If additional wire length is required, the cable can be extended by adding more cable
as necessary. However, for power cable runs longer than 15 feet, larger wire diameter size
should be used to prevent line loss. Fig 2-5 provides recommended wire sizes to use for
various cable run distances.

‘Kb~?~

VOLTAGE

AWG WIRE SIZE

IO’

20’

30’

40

Fig. 2-6 POWER CABLE LENGTH

Your VHF radio should be connected to the nearest primary source of ship’s DC power. A
typical source may be a circuit breaker on the power panel or a fuse block located near the

unit. When connecting to either of these sources, the circuit breaker or other in-line fuse

should be rated at 10 amps.

It is recommended that terminal lugs be used to connect the power cable to the DC supply and

that the lugs should be both

crimped and soldered.

This is verv imoortant in order to insure
adequate current draw to the equipment. Intermittent operation may result if an inadequate
connection is made to the power source. The connection terminals should be clean and with
no sign of corrosion.

The RED (+) wire is connected to the positive terminal of the power source or battery. The

BLACK (-) wire is connected to the negative (ground) of the power source or battery. Should

the power polarity be inadvertantly reversed, the 10 amp. in-line fuse located in the RED (+)
conductor will open. Check the input power leads for correct polarity with a VOM, reconnect
the leads observing correct polarity, and replace the fuse. Be sure to use the same rate and
type of fuse.

2.4.2 External SpeakerConnections

The YELLOW (+) wire and GREEN (-) wire are used for connecting the VHF5200 to an exter­nal speaker. (Refer to Fig. 2-4)

Three 3 watts of audio output power is provided for an external 4 ohm speaker. A suitable
speaker can be purchased from your local marine dealer.

Connect the YELLOW (+) wire and GREEN

(-)

wire to the speaker observing polarity as it is
marked on the speaker. When connected, the external speaker will function simultaneously
with the internal speaker.

7

2.4.3 AntennaConnections

The coaxial cable from your VHF antenna is intended to be connected to the antenna jack on
the rear chassis using a PL259 VHF-type connector. The antenna cable may be cut to desired
length. If a longer cable length is required, RG-58 50-ohm coaxial or equivalent cable may be
used for antenna runs up to a maximum of 50 feet. If the distance required is even greater,

then we recommend using low loss RG-213 or equivalent cable for the entire run in order to
avoid excessive losses in power output.

If the antenna connector is likely to be continuously exposed to the marine environment, pro-

tective coating of silicon grease (similar to Dow Corning DC-4) can always be applied to the

connector before mating it to the radio to help prevent corrosion. Any other extension or
adapters in the cable run should also be protected by silicon grease and then wrapped with a

weather-proofing tape.

2.4.4 Antenna Mounting Suggestions

The best radio in the world is useless without a good antenna location. Mounting the VHF
antenna properly is very important because how it is mounted will directly affect the perfor­mance of your VHF radio. A standard VHF antenna which is designed for use aboard water
craft should be used.

There are several factors to consider so as to maximize the effective communication range of
the radio.

l

SinceVHF transmissions are essentially Line-of Sight, mount the antenna at the highest possible

location on the vessel. The location should also be free of obstructions in order to obtain

maximum range.

l

Use an antenna with the highest possible gain characteristics.

9

If you must extend the length of the coaxial cable between the antenna and the radio, use a cable
designed for the least amount of power loss over the entire cable length.

l

Keep the coaxial cable between the radio and antenna as short as possible.

214.5

Grounding

While special grounding is not generally required for VHF radiotelephone installations, it is a
good marine practice to properly ground all electronic equipment to the ship’s ground system.
The VHF5200 can be connected to ground by attaching a wire to the screw indicated in the
drawing below and then to the nearest ship’s ground connection point. The recommended

wire to be used for grounding is #I 0 AWG.

ANTENNA JACK

FCiWER/EXlERNAL SPEAKER CABLE

Fig. 2-7 TYPICAL GROUNDING METHODS

8

SECTION 3

OPERATIONS

3.1 INTRODUCTION
I

Your VHF5200 has the capability to transmit on 53 and receive on 93 Marine VHF radiotele­phone channels. There are channels that are FCC approved but may only be used by autho-

rized stations for specific purposes, depending on the type of vessel (commercial or non­commercial). Refer to Table 3-l on pages 16 and 17. These tables list all of the marine VHF
channels available in your VHF5200 for International and U.S. radiotelephone use. Full familiar­ization with this table is essential when selecting your channels. The International frequencies
were agreed upon by the attending countries at the 1968 International Telecommunication
Union meeting in Geneva and are in active use around the world. The U.S. channels are those
channels authorized for use in the U.S.A. by the FCC.

3.2 CONTROLS AND LCD DISPLAY

Refer to Fig. 3-l for familiarization with the controls and mode display.

3.2.1 Controls

@

VOLUME Control (On/Off)

Turns the radio On and Off and controls the Volume of the audio output to the speaker.

IAl [VI

Keys

The Up and Down keys

are

used to move the channel numbers up or down. The channel

number can be increased or decreased by one with each key press, or will continue to

increase or decrease the number as long

as

the key is held.

SQUELCH control
Provides an adjustable input signal threshold to eliminate random RF background noise

during “no signal” conditions. This control sets the signal-to-noise ratio at which a signal

will become audible.

[I6

PLUS] Key

Used to Select channel 16 immediately. This channel has been preset to channel 16 at the

factory prior to shipment.

Refer to section 3.3.2 for instructions on how to change the 16
PLUS channel. The 16 PLUS key on the microphone has the same functions as the 16
PLUS key on the radio.

jWX/INT]

Key

When pressed once, puts the radio into the weather channel receiving mode. A “WX” will

be displayed on the LCD along with the weather channel number (O-9).When in this mode,
the transmitter is always disabled.

To select International channels, press and hold the

WXIINT

key for two seconds. You will

hear “beep” and “INT” will appear on the display. This causes the synthesizer to program

International channel frequencies. When pressed and held again for two seconds, you will
again hear a “beep” and the synthesizer programs US frequencies. (“INT” indication
disappears)

[MON/1/25] Key

When pressed once, the radio enters the MONITOR mode and “MONITOR” is displayed on

the LCD. In this mode, the radio will scan (monitor) 16 PLUS (priority) channel, a selected
working channel, and a weather channel for the weather alert tone.

When pressed and held for two seconds, this key changes the transmitter output power

from 1 Watt

(“IW”

will be displayed) to 25 Watts

(“IW”

disappears) and vice-versa.

9

@

[SCAN] Key

-With no channels entered in memory:
When pressed once, “SCAN” will begin to flash on the LCD and Ail-Scan will be initiated in three

seconds. To stop scanning, press the “SCAN” key again.

-With one or more channels entered in memory:
When pressed once, “SCAN” and “MEMORY” will begin to flash on the LCD and Memory Scan

will be initiated in three seconds. To stop the unit from scanning, press the “SCAN” key again.

-With one or more channels entered in memory:

When pressed once, “SCAN” and “MEMORY” will begin to flash on the LCD. If pressed again

within three seconds, “MEMORY” will disappear and “SCAN” will continue flashing indicat
ing All-Scan is now the selected mode and will be initiated in three seconds.

More detailed operational information is available in Section 3.3.4 Scan Modes.

When the “SCAN” key is pressed and held for two seconds,

“MEMORY” will appear on the

LCD and the channel that is selected when the key is pressed will be stored in memory. A
channel may be removed from memory by selecting the channel to be removed and press
ing and holding the “SCAN” key again for two seconds.

“MEMORY” will disappear from the

LCD. Weather channels can not be placed into memory.

@

PTT (Push-To-Talk) Switch
When pressed, puts the radio into the transmit mode and “TX” will be displayed on the LCD.

All of the above keys except

PlTwill

produce an audible

“beep”when

pressed.

@--

16PLUS ---@

Channel

,-a

Fig. 3-1 LAYOUT OF CONTROLS AND CONNECTORS

10

3.2.2 LCD Display

A number of characters appear on the LCD display in different locations. The following list

describes the characters as well as when and where they will appear.

/

I

I

1 WATT SCAN

0

I

@

wx ALERT

0

MONITOR

1

TX INT MEVORY

\

\

1

w

Fig. 3-2 LCD DISPLAY

0

SCAN: Will flash by itself when All-Scan mode is to be initiated or will

flash

in unison with

“MEMORY’ when Memory Scan mode

is

to be initiated.

@

1 WATT (High/Low Power): Will be displayed when the transmitter circuits are providing

I

Watt of power to the antenna. When the transmitter is supplying 25 Watts to the antenna,
the “1 WATT” indication will be extinguished.

@

ALERT (Weather Alert): Will blink when a Weather Alert Tone has been detected.

@

WX (Weather): Will be displayed when the channel selected to be monitored is a weather channel.

@

MONITOR: Will be displayed when the MON/INT key is pressed. This indicates the radio

is in the MONITOR mode.

@

INT (International/USA): Will be displayed when International channels are programmed for use.

“INT’ is not displayed when US channels are programmed for use.

0

TX (Transmit): Will be displayed on the LCD when the Push-To-Talk

(PTT)

switch is depressed

indicating the transmitter circuits are providing a signal to the antenna.

@

MEMORY: Will be displayed when the SCAN key is pressed and held for two seconds, or

when the radio is programmed to the MEMORY SCAN mode.

@

LCD Segments: Will display channel number in use.

3.3 OPERATING PROCEDURES

Specific operating procedures for the VHF5200 are presented in this section, General informa­tion regarding corrrect marine channel usage may be found in the Appendix section.

Refer to

the Controls section 3.2.1 beginning on page 10 for a thorough description of all VHF5200
functions.

11

3.3.1 Turning the Power On

1) Rotate the ON/OFF/VOLUME control clockwise to turn the radio on.
NOTE

When the Power is on , the synthesizer automatically programs for USA channel frequencies
and selects the calling channel 16. (Refer to16 PLUS operation to change this channel.)

Setting the Volume

1) Rotate the SQUELCH control fully counterclockwise. Background noise will be heard.

2)

Rotate the VOLUME control for the desired volume level.

SettingtheSquelch

1) Rotate the SQUELCH control slowly

dockwise

until the background noise ceases.

SeUing the Power Output

1) Simply press the “MON/1/25” key for two seconds to toggle between 1 Watt output and 25
Watt output. When “1 WATT’ is displayed. the output power is 1 Watt. If “1

WATT”

is
extinguished, 26 watts is being output. The choice of power output is dependent upon the
distance of transmission and transmitting conditions. In certain US harbors and on certain
channels, the FCC requires the power to be limited to 1 Watt. On these “required” than

nels, the radio automatically selects the 1 Watt power output when the channel is selected.

NOTE

Channels 13 and 67 are restricted to 1 Watt operation but may be

ovemdden

in emergencies.

To obtain 25 Watt output on these channels, while in transmit mode (pressing the

PlT

switch),

press and hold the

MON/lMS

key. As long as the

MON/1/25

key is held, power output will be

25 Watts. When the key is released, the radio reverts back to 1 Watt as indicated on the LCD.

SelectingtheChanneI

1) To select the appropriate channel, press the [A] or [I] channel select keys.

Refer to Table 3-l to

select your ‘working” channel.

To Transmit

1) Select the desired mode (INT or USA) by pressing and holding the

WXIINT

key

fortwo

seconds.

When

“INT’

is displayed, International mode is selected. When extinguised. USA mode is active.

Then press the Push-To-Talk switch and speak into the microphone using a clear normal voice.

2) When the power is initially turned on, simply press the Push-To-Talk switch, the radio will be
ready for transmission on CH 16 or a user selected priority channel (16 PLUS).

The VHF5200 is designed to meet the new FCC Rules Part 80.203. which states, if the Push-
To-Talk switch is pressed continuously for over five minutes, transmission is forcibly inhibited.

If this occurs, audible beeps will sound and “TO” (time out) blinks on the LCD until the Push-
To-Talk switch is released. After releasing the Push-To-Talk switch, the radio is ready for
reception.

NOTE

Initial communication contacts are usually made over channel 16 as all

ships and shore stations monitor this channel. Then a shii to a working

channel will be necessary.

To Select a Weather Channel

1) Simply press the

WX/INT

key, then use the Up [A] or Down

[r]

key to select the desired

weather channel from 0 to 9 When this mode is selected, the transmitter is always inhib

ited.

2)

If a weather alert signal is received on your selected WX channel (when in the Monitor Mode)

therelsaflv

e-second audible alarm generated. To cancel the audible alarm, simply press any key.

3.3.2 The 16 PLUS (priority) Channel
The 16 PLUS channel has been preset to channel 16 prior to shipment from the factory, but the

16 PLUS channel can be changed freely, with the exception of all weather channels.

1)

Press the Up [A] or Down

[r]

key to select the desired channel. Then press and hold the

16 PLUS key for three seconds. An audible beep tone will confirm that the selected channel

is stored In memory as the 16 PLUS channel.

2) To reselect channel 16 as the 16 PLUS channel. repeat step 1 for channel 16.

3.3.3 Channel Memory

The VHF5200 has the capability of memorizing all U.S. or International channels, The channels

memorized will be scanned in the Memory Scan mode.

1) Channel Memory: To put a channel into memory, simply select the channel to be stored with the Up
or Down arrows. Push and hold the “SCAN” key for approximately two seconds until a

“beep” is heard and “MEMORY” is displayed on the LCD. This procedure can be repeated

for all U.S. or International channels.

2) Memory Clear: To clear a channel from memory, select the channel to be cleared with the Up or
Down arrows. Press and hold the “SCAN” key for approximately two seconds until a “beep”

is heard and “MEMORY’ disappears from the LCD.

3.3.4 Scan Modes

The VHF5200 is equipped with two types of scan options, All-Scan and Memory Scan. How
these options are accessed is dependent upon whether there are any channels stored in
memory.

1) All-Scan mode

If no channels are stored in memory, when the SCAN key is pressed once, “SCAN” will
begin to flash on the LCD. In three seconds, if no other keys are pressed, the radio will begin
scanning all channels (except weather channels) as long as no signal is received. If a signal

is received, the scan will stop and monitor the receiving channel. If the signal is lost for five

seconds, the radio will resume scanning. If the scan has stopped on a received signal, you

may resume scanning by pressing the SCAN key. To cancel the scan mode, press the

SCAN key once while the radio is scanning.

2) Memory Scan mode
If one or more channels are stored in memory, when the SCAN key is pressed, “SCAN” and

“MEMORY” will begin to flash simultaneously on the LCD. If no other key is pressed, the

radio will begin scanning all channels currently in memory in three secondsAs with All-

Scan, if a signal is received, the scan will stop on the receiving channel until the signal is lost

for five seconds or the SCAN key is pressed. To cancel memory scan, press the SCAN key

while the radio is scanning.
If you have one or more channels in memory and want to initiate Ail-Scan, perform the following:

Press the SCAN key. “SCAN” and “MEMORY’ will flash on the LCD. Press the SCAN key
again within three seconds and “MEMORY’ will disappear from the LCD leaving only “SCAN”
flashing. All-Scan will begin in three seconds if no other key is pressed.

3.3.5 Master Reset
To perform a master reset, press and hold the 16 PLUS key while turning the unit on. This feature

clears all channels from memory and programs the 16 PLUS feature back to channel 16.

3.3.6 Monitor Mode

Before entering the Monitor Mode you must first select the WX channel you wish to monitor for

the weather alert tone. Next, you must also select a working channel to be monitored for traffic.

(Refer to section 3.3 for instructions on channel section) For this example, we will use channel
83 as our working channel and

WX2

as our weather channel. Now simply press

the MON/1/25

key and the radio will begin to scan the channel designated for 16 PLUS, 83, and WX2, repeti-

tively.

The 16 PLUS channel programmed into the radio is automatically selected as one of the

monitored channels. To cancel the Monitor mode, press the MON/1/25 key again.

___.....__.

-..-

. . . .

-.

Working Channel

lf a

Signal

iS

received on CH 83, the scan will stop on CH83, but will continue to monitor 16 PLUS

and the selected weather channel every five seconds.

16 PLUS (priority) Channel
If while scanning, a signal is received on the designated 16 PLUS channel, the scanning will stop on 16
PLUS as long as the signal is being received. If the signal ceases for more than five seconds, the
scanning will continue.

Weather Channel

Until a weather alert tone signal is received on WX2, the scan will stop on

WX2

briefly, but will not

give any audio output. When a weather alert tone (1050 Hz) is received, the monitor will stop and an

audible alarm will sound. When the audio alert ends in five seconds, the emergency weather
broadcast will be heard. To silence the alarm, simply push any key.

13

3.3.7 VHF5200 Marine Channels and Their Usage
CAUTION

The transmitter of the VHF5200 is disabled when channel 15 or WXO -

WX9

is displayed.

CHANNEL

DESIG.

Ol#
M#

03#
04#

OS
06
07
08
09

10
11

12

13"

14

1%

16

17.

18
19

20

21(CG)
WW

23(CG)

24

25

26
27

28

60+
61~
62~

63

64+

FREQUENCY (MHZ) FUNCTION

TYPE OF TRAFFIC

TX

Cl%)

(ZL)

SHIP TO

SHIP TO

SHIP

SHORE

156.050 156.050 160.650

-

156.100

156.100 160.700

-

156.150 156.150 160.750

-

156.2Kl 156.200 160.800

-

156.250 156.250 160.850

Port Operations Yes Yes

156.300 156.300 156.300

Intertip

Safety Yes No

156.350 156.350

160.950 GJm’l Yes Yes

1.56.400

156.400 156.400

corn'1

Yes

No

156.450 156.450 156.450

call & ship/ship

YeS

YES

156.500 156.500 156.500

Corn’1 &

ship/ship

Yes Yes

156SSO

156.550 156.550

Corn’1 &

Ship/Ship

Yes

Y&S

156.600 156.600 156.600

Port

Operations

YeS Y&S

156.650 156.650 156.650

Nav. Ship/Bridge

Ye.5

YeS

156.700 156.700 156.700 Pori Operations YeS Yes

156.750 156.750 l3wironmental

156.800 156.800

156.800

Em~g/CaUii Yes

YES

1.56.8SO

lS6.85il

156.850

State Controlled Yes

YeS

156.900 156.900 161.500

Com’l

Yes YeS

156.950 156.950 161.550

Corn’1 Yes YeS

1.57.000 IS7.OOLl

16X.600

Port Operations YeS YeS

157.oso

157.050 161.650

Coast Guard

Yes YaS

157.100 157.100 161.700

CoastGuard

Yes

Yes

157.1so 157.150 161.750

Coast Guard

Yes Yes

157.200 161.800 161.800

Public

Comesp. No Yes

157.250 161.850 161.850

Public

Corrwp. No YeS

157.300

161.900 161.900

Public

Corresp. No Yes

157.350

161.950 161.950

Public

Gxreap. No YeS

157.400 162.000

162.000

Public

Coaaap. No YeS

156.025 156.025 160.62s

-

156.075 156.075 160.675

-

156.125 156.125 160.725

-

156.175 156.175 160.775

Corn’1 Yes Yes

156.225 156.225 160.82s

-

Table 3-1

* 1 Watt only
** 1 Watt initially. User can override to high power (25 watts) via front panel controls.

#

The transmitter is automatically disabled when channels 1,2,3, and 4 for USA are selected and when 15

for USA and International are selected.

+

Assigned by the Canadian Government, proper authorization must be ensured prior to use.

CAUTION

Operation on channels not designated for use by your classification of craft or on International

Channels within the US territorial waters is a violation of F CC Rules and Regulations and may

result in severe

penafties.

14

CHANNEL

DESIG.

6.5
66

67”

68
69

7OtI

71
72
73

74

75#
76#

77’

78

79

80

81

82

83

84

85

86

87

88

FREOUENCY (MHZ)

FUNCTION

-

TYPEOFTRAFFIC

TX

(lIEi)

(IN?L)

SHIP TO SHIP TO

SHIP

SHORE

156.275 156.275 160.875

Port

Operations Yes Yes

156.325 156.325 160.925

Port Operations

Yes Yes

156.375 156.375 156.375

Corn’1

Yes

No

15 6.425

156.425 156.425 Non

Corn’1

Yes Yes

156.475 156.475 156.475 Non

Corn’1

Yes Yes

156.525 156.525 DSC Yes Yes

156.575 156575 156.575 Non

Corn’1

Yes Yes

156.625 156.625 156.625 Non

Corn’1

Yes

No

156.675 156.675 156.675

Porl

Operations Yes Yes

156.725 156.725 156.725

Port Operations

Yes Yes

156.775 156.775

-

156.825 156.825

-

156.875 156.875 156.875

Port Operations

Yes

No

156.925 156.925 161.525 Non

Corn’1

Yes Yes

156.975 156.975 161575

Corn’1

Yes Yes

157.025 157.025 161.625

Corn’1

Yes Yes

157.075 157.075 161.675

Coast Guard

Yes Yes

157.125 157.125 161.725

Coast Guard

Yes Yes

157.175 157.175 161.775

Coast Guard

Yes Yes

157.225 161.825 161.825 Public Cmresp. No Yes

157.275 161.875 161.875 Public

Gnesp.

No

Yes

157.325 161.925 161.925 Public Gnesp.

No

Yes

157.375 161.975 161.975 Public Corresp.

No

Yes

157.425 157.425 162.025

Corn’1

Yes

No

Table 3-1 (Continued)

*

1Watt

only

c*

1Watt initially. User can override to high power (25 watts) via front panel controls.

#

The transmitter is disabled when channels 75 and 76 are selected. Channel 70 is now used for DSC calling

only, therefore transmission on this channel is disabled on this radio.

CAUTION

Operation on channels not designated for use by your classification of craft or on International
Channels within US territorial waters is a violation of FCC Rules and Regulations and may result

in severe penalties.

VHF 5200 Weather Channels

and Frequencies

CHANNEL FREQUENCY (MHZ) TYPE OF TRAFFIC

WO

163.275

NOAA Weather

Receive Only

WC1

162.550

NOAA Weather Receive Only

w2

162.400

NOAA Weather

Receive Only

w3

162.475

NOAA Weather

Receive Only

w4

162.4'25

NOAA Weather Receive Only

xx5

162.450

NOAA Weather

Receive Only

wX6

162.500

NOAA Weather Receive Only

WY7

162.525

NOAA Weather Receive Only

WX8

161.650

Canadian Weather Receive Only

wx9

161.775

Canadian Weather Receive Only

FUNCTION-SHIP TO

SHORE

15

SECTION 4

TECHNICAL DESCRIPTION

4.1 GENERAL

The VHF5200 can be considered as consisting of two major sections. They are:

l

The Control Circuitry (consisting of the front panel controls, the LCD display, control

CPU).

l The

Transmitter/Receiver/PLL

circuits.

4.2 THE CONTROL SECTION

The heart of the control section is the CPU, IC201, located on the main PCB.

The CPU controls all of the following items:

l

Controls the Squelch circuit by detecting a busy signal from the second IF circuit

IC5.

l

Generates a beep tone when a key is activated on the keyboard.

l

Mutes the transmitter modulation circuit when receiving.

l

Controls the output power of the transmitter High/Low.

l

Controls the dividing ratio N of the PLL circuit.

l

Switches On/Off the transmitter power.

l

Mutes AF audio.

l

Detects a weather alert signal (when in Monitor Mode).

l

Controls the LCD display.

4.3 THE

TRANSMITTERIRECEIVERPLL

SECTION

In reading through the following circuit descriptions, it may be helpful to refer to Figure 4-l Block
Diagram of the TX/RX/PLL circuits.

16

4.3.1 PLL (Phase Lock Loop Circuit)

The PLL circuit is the frequency synthesizer in the VHF5200.

The reference frequency of 12.8 MHz is provided by crystal

XTLI

and IC3. IC3 contains the
reference oscillator (12.8 MHz) circuit, the phase comparator, the program counter and the
phase detector. The 12.8 MHz reference signal is divided by 512 in the program counter in IC3
to obtain a 25 KHz reference signal. The dividing ratio is determined by CPU

IC201.

The VCO
output from oscillator Q4 is amplified by buffer amplifier Q3, and returned to IC3 and is divided
by the dividing ratio N to obtain a 25 KHz signal. N for 1 N in lC3 is determined by CPU

IC201.

Both of these

25KHz

signals are fed into the phase comparator circuit of IC3.

The phase detected signal, obtained by comparing the phase difference between these two

signals, is applied to LPF between pins 11 and 12 of IC4 to get a DC voltage correlated with the
phase difference.

The DC voltage acts on the VCO to make the two 25 KHz signals the same phase. When this
condition is met, the PLL circuit is locked. If the two signals have a large phase difference, the
PLL is unlocked. In this condition, the unlocked signal is fed to CPU IC201 from lC3 and the

transmitter is compelled to stop.

The VCO output from Q4 is fed to the TX amplifier Q2 and the first RX mixer

Ql9

through

buffer amplifier Q3.

4.3.2 Transmitter Circuit

A signal from the microphone is fed to a pre-emphasis operations amplifier IC3, and modulates
VCO(Q4) through active LPF IC2.

The VCO output signal from Q4 is sent to the RF power amplifiers ICI, Ql and Q2 through
buffer amplifier Q3. The RF signal from ICI is fed to the antenna through a low pass titter.

The DC voltage correlative to the RF output is detected by 02 and Q9. amplified by Q24 and

fed to ICI .The output voltage from ICI controls the RF power to keep the RF output at a con

stant level.

4.3.3 Receiver Circuit

1) RF Circiut
The signal from the antenna passes through the single tuned band pass filter, and is amplified by RF
amplifier Q17, and is fed into a triple tuned band pass filter. The signal is then mixed by

Q19

(first mixer) and produces the first IF signal of 21.6 MHz. This signal is sent to a crystal filter
(21.6 MHz) and first IF amplifier Q20, mixed by IC4 , the second mixer, and becomes an

audio signal after detection.

2) IF Circuit
The output of the first IF amplifer Q20 is fed into IC4. IC4 contains the second mixer, second

local oscillator, 455KHz amplifer, quadrature detector and DC switching amplifer.

A455 KHz ceramic filter is installed between pins 3 and 5 of IC4 to examine the selectivity of
this unit.

The detector output is separated into audio and noise components by an RC filter. The noise
component is fed back to the noise amplifer section of 164. Its output is rectified by a diode
in IC4 and then fed to the switching amplifer in IC4.

3) AF Circuit
The AF signal from IC4 is amplified by IC5 to drive the speaker while the receiver is in the

squelched condition. Muting control of IC5 is carried out by the CPU IC 201.

4) Weather Alert Tone Detecting Circuit
If a weather alert tone is included in the AF signal from IC4 while receiving the weather service
broadcast, IC6 detects it and notifies an alert condition to CPU

IC201.

17

BLOCK DIAGRAM

Fig. 4-l VHF 5200 Block Diagram

co

4.4 SPECIFICATIONS .

Transmitter

Channels

53 US/international

Frequency Stability

IOPPM ( 0.001%)

(-20 “c

to+50c)

Frequency Range
Channel Spacing
Power Output
Modulation

156.025 to 157.425MhHz
25 KHz Increments
25 Watts switchable to 1 Watt into 50 Ohms at 13.6 Vdc

Frequency modulated

16F3

(rt4.5KHz at

IOOOHz)

Modulation Audio Response

Shall not vary

+I/-3 dB

from true 6 dB pre-emphasis from 300 to

2500Hz, reference 1000 Hz. Audio frequences 3-20 KHz shall be

attenuated (at 1 KHZ by 60 log f/3

dB.

Above 20KHz by 50dB)

FM Hum & Noise Level

Greter than

-4OdB

below audio

Audio Distortion
Spurious & Harmonic Emssions

Less than 10% at 1 KHz for+3KHz deviation

Attenuated at least

43+10

log PO (below rated radiated carrier power)

per FCC Rules Parts 2 & 80

Antenna Impedance

50 Ohms

Transmitter Protection

Shall survive open or short circuit of antenna system without damage
(10 min.test)

Receiver

Channels
Frequency Range
Frequency Stability
Usable Sensitibivity

93(inciudes 10 weather channels

‘156.25 to 163.275 MHz in 25 KHz increments

+lO

PPM(O.OOl%)

from -20°C to +50%

0.3fiV for 12dB

(SINAD)

Squelch Sensitivity Threshold

0.2,~V

or better

1 .O,V full squelch

Adjacent Chl Rejection

Greater than 70

dB

Spurious Image Rejection

Greater than 70

dB

Intermodulation

Rejection

Greater than 70

dB

19

Audio Output

Hum & Noise in Audio

Operating Requirements

Input Voltage
Current Required

Transmit

Operating Temperature
Duty Cycle

Humidity

Radio Dimensions

Height

Width

Depth

Weight

3 Watt or more at 10% or less distortion into 4 Ohm load

Less than -4OdB

13.6 Vdck15%(11.6 to 156Vdc)

Less than 5.8 amp at 25 Watts
Less than 1.5 amp at 1 Watt

-20°C to +5O”C

I

Continuous, 80%receive, 20%transmit
(max 1 Omin,

@25”C)

100% at

50°C

for 8hours

54 mm (2.2inches)

145 mm (5.7 inches)

120

mm

(14.72 inches)

Arwox.

7509

(1.7 lb)

20

SECTION 5

MAINTENANCE AND ALIGNMENT

5.1 GENERAL

The purpose of this section is to provide maintenance and servicing instructions for the service
technician. The equipment is designed to provide long periods of trouble-free operation. It is

recognized, however, that environmental and other factors will result in a need for occasional
service.

5.1 .IProduct Support and Customer Service

“We at Apelco, have gone to great lengths to insure that the product you have purchased holds

up to our high quality and performance standards. If, however, you are ever in need of service,

please contact Apelco directly, or an authorized Apelco dealer for assistance. You may con­tact Apelco directly at the following numbers, to speak to one of our knowledgeable and courte­ous specialists”.

Customer Service: [phone] ext 2120

Phone calls to this deparment should deal primarily with questions regarding Purchasing Parts
and accessories, authorized Apelco dealer locations, basic product information, and brochure/
literature requests.

Product Support: [phone] ext. 2444

Phone calls made to this deparment should deal primarily with the operation and technical

aspects of Apelco Marine equipment.

When calling the above numbers, your phone call will be placed in a queue and will be an­swered in the order in which it was received. The normal operating hours for this system are

from 8:30am-5:OOpm Eastern Standard Time.

5.2 PREVENTIVE MAINTENANCE

The VHF5200 has been constructed to be virtually maintenance free. Your attention to a few

basic points should assure many years of service.

1)

Although the unit is waterproof, always keep the unit as dry as possible.

2)

Clean the exterior of the unit with a tissue or soft non-abrasive cloth.

CAUTION

Do not use solvents or other chemicals for cleaning this equipment

3) Inspect the radio case and antenna for any physical damage.

21

5.3 ALIGNMENTS AND SERVICE

This transceiver is completely aligned at the factory and does not require any adjustments at installation.

The test equipment listed below are used for the test setup shown in Fig

5-I

.This test setup is used either in

part or in total during the following adjustments.

TEST EQUIPMENT

1.

DC Power Supply

(2OV,lOA)set

at

13.6Vdc

2. RF Power Meter (40W$Oohn,l50-200 MHz)

3. RF Signal Generator

(5Oohm

Output,l50-200MHz)

4.

FM Linear Detector (FMLD) or Deviation Monitor

150-200MHz

5. Frequency Counter

6. Digital Voltmeter (DC Voltmeter)

7.

Oscilloscope (any osilioscope accurate for audio signal tracing)

8.

SINAD

Meter

9. Distortion Meter

10. Toggle Switch (for use as a PTT switch)

11. Coaxial Switch for TX/RX antenna switching

22

L

5.3.1

PLL Adjustment (TRANSMITTER/RECEIVER)

1) Connect the power supply (13.6 V,lO A)to the power line and the PTT switch to the micro­phone terminal.

2) Connect a digital voltmeter or high impedance tester (positive lead to TPl negative to
ground) and adjust Tl on the RF module as shown in Table 5-l (See Fig 5-2)

FF

Sequence

Item

Condition

Ad/.

point

Adj. volt.

1

TX transmit CH.60 USA

Tl

3.5

zk

0.1 Vdc

RX receive CH.60

-mm

check for

1.652 0.3Vdc

RX

receive CH.WXO

---

check for 3.4+

0.3Vdc

Table 5-l

53.2 Frequency Adjustment (TRANSMITTER)

1) Connect the coupler output to a frequency counter, set the radio on

CH16(156800MHz),

key the transmitter, and read the indication on the frequency counter.

2) Adjust trimmer capacitor CVI on the RF module for the desired frequency(l56800MHz)

&200

Hz on the frequency counter.

5.3.3 Modulation Adjustment (TRANSMITTER)

1) Connect the coupler output to an FM linear detector.
Connect an audio oscillator to the microphone connector and key to

the transmitter,

2) Set the audio oscillator output to-20 dBm,300 Hz and adjust RV 3 on the RF module for a
deviation of 4.5 KHz ? 300 Hz.

3) Set the audio oscillator output to 43 dBm,l KHz and read the deviation meter

(k2.8

KHz

-23.2

KHz).

23

5.3.4 Power Output Adjustment (TRANSMITTER)

1) Connect an RF power meterto the antenna connector through the coupler.

Key to transmit and

adjust

RVI

and RV2 on the main PCB as shown in Table 5-2. (See Fig.

5-2)

Sequence Condition

1

13.6VDC H/‘L:L

2

13.6VDC

H&H

Ad].

Point

Target Power

RVl

o.gw+/-0.05w

LOW

Power

(limit

1.0 w)

RV2

24w+/-0.5~

High Power

(limit25w)

Table 5-2

5.3.5 RF Sensitivity Adjustment (RECEIVER)

1)

Connect an RF signal generatorto the antenna connector and a SINAD meter to the external
speakerline.

2)

Set the deviation of the RF signal generator to 1 KHz

+/-

3 Hz.

3) Set the output level of the RF signal generator and adjust T2-T6 and T301 on the RF
module as shown in Table 5-3,(See Fig.52).

I

Sequence Conditlon

I

Adj. Point

Target Level

1

CH.BB(157.425MHZ)

SG output:60dBu

I

TZ-T6

T301

Max.Sensitivity

2

I

CH.WXO

SG output:-6dBu

I

Eii6

I

Over 12 dB SINAD

Table 5-3

5.3.6 Weather Alert Frequency Adjustment (RECEIVER)

1) Connect an RF signal generatorto the antenna connector
Set the RF signal generator as follows:

. Frequency:

162.550 MHz with no modulation

l Output level: 60dBu

2) Select the weather channel

WXI

.

3)

Connect a frequency counter to TP3 on the MAIN PCB and adjust VR4 to obtain 1050 kHz

+/- 5 Hz on the frequency counter. (See Fig. 5-2)

24

5.4 TROUBLESHOOTING GUIDE

Table 5-4 provides a general troubleshooting chart for use by a technician to isolate circuitry failures to
specific functional areas within the VHF radio.

1

NOTE

Miiponents within the radio are generally not field replaceable. Therefore repairs to the

radio typically go down to the PC board level only.

A replacement parts iii for the VHF 5200

can be found in Section 6.

r

I

Item Number

Symptom Possible Cause

Unit does not turn on

a. Defective power switch
b. IOamp. Fuse in power line open

1

c. Diode

Dll

open

d. Noise filter

L15

open

e. Capacitor Cl19 and Cl20 shorted

f. Defective regulator

IC7(5v)

No sound with AF signal

a. Defective internal speaker

2

applied to pins 1 and 2 of

b. Defective

IC5

and/or associated

IC6 components

3

No sound with AF signal

a. Defective volume control

applied to volume control b. Defective mute circuitry

(IC201)

Squelch circuit

a. Check squelch control

4

inoperative

(b.

Defective

IC4and

/or associated circuitry

between pins 7 and 9

No receive (Rx) a. Defective regulators

IC7(5V)

b. Defective

QlB(RX

B+)

c Check IC4 audio output voltage at pin 9

d.

Defective AF amplifier

Q21

e. Defective mute circuitry

IC201

5

f.

Check XLT2 output for 21.145 MHz signal

g. Check 21 .GMHz output of first mixer

QIQ

h. Check 216MHz output of ceramic filter IF amplifier FILI

i.

Check 21 .GMHz output of first IF amplifier Q20

j. Check 455KHz signal from ceramic filter

FlL2

k. Failure of VCO circuit

(Q4,Q3,

and/or PLL IC3)

I.

Defective CPU

(IC201)

Low receiver sensitivity

a. Check antenna and connector for possible

corrosion or bad connection

6

b.

Failure of the output from

Q17,

QIQ,

QZO,

and/or

IC4

c. Check the output level of

VCO per

para.

5.3.1

Table 54 TROUBLESHOOTING CHART

25

Item Number Symptom

Possible Cause

CPU inoperative

7

a. Turn off the power once, and try again
b. Check CPU clock frequencies (pins 22 and 23, and

pins 26 and 27 of IC201)

c. If clock frequency is not present, check for

+SVDC

line

8

Display malfunction

a. Check the interconnection to the LCD display
b. Inoperative CPU

No transmit (TX)

9

10

11

12

a. Defective

PlT

switch
b. Defective regulators IC7(5V)
c. Defective Ql2(TX +B)

d. Check power transmit circuit @I

,Q2,and/or

ICI)

e. Failure

oflVC0

circuit (Q4 and /or Q3) or PLL IC3

f. Check PLL control voltage for 3.5 VDC at TPI on

channel 60.

g. Failure of talk detection circuit

(IC201)

Low RF power output a. Check RF power output from ICl . If it checks

good, check the triple Pi type network components

(C26,Ll-3,etc.) and antenna switching diode

(D4). If not good then check the voltage level
outputs of the drive amplifiers Qland Q2 as well as
the associated circuitry

b.

Check

power control circuit (Q24,Q9,QlO) and

IC4

Poor or no modulation

a.

Check,VCO

output frequency at pin 14 of PLL IC3

PLL phase detector output at pin 12 of PLL

IC3

and

associated circuitry

b. Check 12.8 MHz crystal

(XLTI)

PLL output frequency or level
incorrect

a. Check frequency of 12.8 MHz

crystal(XLT1)

b. Check the frequency input at pin 14 of IC3 and

verify

the transmit frequency

Table 54 (Continued)

26

SECTION 6

PARTS LIST AND DRAWINGS

6.1 PARTS LOCATION LIST
MAIN PCB ASSEMBLY SECTION

I

CKT, SYMBOL DESCRIPTION

PART NO.

I

D1,4

D2
D3

D5
D8

D7

D8

D9

DIO
Dll

FL101

F901 ,F907
F905

F906

ICl

TX Power Module, M5771 OA (or S-AV6) 1032698-85

IC2

OPAmp, 2902M

IC3

PLL IC, LC7153M

Ic4

FN IC, TA31136FN

IC5

AF Power Amp, LA4485 G263720-10

IC6

Tone Detector,

BAI

604

IC7

+5V Regulator, 78M05

Ql
cl2
cl3
CM
Q5

Q6,8,11,15,23

Q7

Q9
QIO

Main PCB Assembly

Ant SW, Ml 308

RF Power Det,

IS%45

----~~~~~~~~~~~~---

RF SW, lSVl28

ModNariICap, ISV214
VCOAfarilCap,

KVI

832C
SW, ISS226
SW, DAN202

Isolator, DAN202
Isolator, FMBG24

G623681-1

Xtal, 32.768 Khz
Xtal, MF21.6-RB
Xtal, 21

.I45

Khz

Xtal, 12.8 Mhz G263479-55

TX Driver, 2SC3357

TX Pre-Driver, 2SC4226

Buff Amp, 2SC4226

VCO, 2SK508

DC Fil, 2SC4116

SW, DTCI 14EK

SW,

2SA81 IA

DC Control, 2SB1185
DC Control, 2SC4116

27

MAIN PCB ASSEMBLY SECTION (CON’T)

CKT, SYMBOL DESCRIPTION PART NO.

Q12,13

Q14

Q16,21

Q17

Q18,22
Q19

Q20
Q301

SW, 2SA1298
SW, DTA124EK

AF SW, DTC343

RF Amp, 2SC4226

AF Amp,

2SC4116

First Mixer, 2SK508

First IF Amp, 2SC3123

High Pass Filter, 2SC4116

CPU PCB ASSEMBLY SECTION

CKT, SYMBOL DESCRIPTION

PART NO.

H200

CPU PCB Assembly

LCD, 211

G623682-2

IC201
IC202
IC203

CPU, M34520M6
EEPROM, 93LC46X
Reset, RH5VA45AA

PL-201

Pilot Lamp, 93 (14V) G263720-24

Q201
Q202

Sw,2sal298

SW, DTCl24EKT

VOLUME/SQUELCH PCB ASSEMBLY

CKT, SYMBOL

DESCRIPTION

PART NO.

Volume/Squelch PCB Assembly

G623681-3

28

Main PCB-Bottom view

Main PCB-Top view

CPU PCB-Top view

CPU PCB-Bottom view

Bottom view

VOUSQ PCB

Top view

Fig. 6-3 VHF 5200 PCB LAYOUT

32

1

INTERNAL WIRING DIAGRAM

POWER CORD

03

L1

sl

P500

E:

s

\

ii

MAIN

PC6

CNIOI

MIC UNIT

TOA0

TO CN202

Fig. 6-4 INTERNAL WIRING DIAGRAM

33

SECTION 7

APPENDIX

7.1 VHF MARINE CHANNEL USAGE GUIDE AND LICENSING REQUIREMENTS

Most of the information found in this section is reprinted in whole or in part from FCC information Bul-

letin No. 2 REVISED EDITION February 1991 and FCC Fact Sheet PR-5000 March 1990.

REMEMBER:

l

Maintain a radio watch on Channel 16. Channel 16 is used for distress and safety purposes

&

l

Use VHF Channel 70 only for Digital Selective Calling (DSC). It may be used for general-pur-

pose calling using DSC. Your cooperation in not using Channel 70 for general intership com­munications is necessary to prevent interference.

l

Your VHF transceiver has a high-low power switch. Use low power whenever feasible.

Unnecessary high-power operations can interfere with other important communications.

l

Always use your radio call sign at the beginning and end of each transmission.

l

Be sure only qualified persons operate your radio. You are responsible for control of your radio.
Know the rules.

l

Limit calls to other vessels to 30 seconds. If you receive no reply, wait 2 minutes; then try
again. Keep communications brief and avoid chit-chat.

l

Never transmit false distress messages, and never use profanity on the air.

OTHER REMINDERS:

l

Do not install or operate your radio until it is licensed. You can obtain a station license and call

sign by completing FCC Form 506 and mailing it with the required fee to the FCC, Marine Ship

Service, PO. Box 358275, Pittsburgh, PA 15251-5275. Form 506-A provides you with immedi-

ate operating authority, valid for 90 days after you mail your license application.

You need a radio operator license to operate a VHF Marine Radio only if you plan to dock in a foreign
port or leave a foreign port to dock in a U.S. port.

l

Your radio license is not transferable. If you sell your boat, request the FCC to cancel your sta-

tion license.

34

If you replace your radio, you do not need to change your license unless the new radio operates on

another frequency band. If you install equipment to operate on another frequency band, apply for

modification of your license.

l

If you carry more than six passengers for hire, your vessel must be certified as a passenger-

carrying vessel by the FCC and the Coast Guard.

Licensing Requirements for Hand Held Portable VHF Marine Transceivers

10 Watts Power or Less

All transceivers, hand helds included, operated in the Maritime Radio Services are required to be
operated under an appropriate maritime station license.

Operation of hand held VHF Marine trans-

ceivers without proper station license can lead to fines and/or administrative sanctions issued against

its user and/or owner.

VHF Marine hand held transceivers can be operated and licensed as follows:

a)

Associated Ship Unit: A hand held VHF Marine transceiver can be operated under an exist-

ing valid ship station license under the following conditions only:

i)

Except for safety purposes, the hand held transceivers must be used only to communi­cate with the ship station with which it is associated. Such associated ship units MAY
NOT be operated from shore.

ii)

The transmitting power is limited to ONE WATT only.

iii)

The hand held transceiver must be identified by the call sign of the ship station along with

its associated unit designator.

b)

Portable Ship Station: The Commission may grant a station license permitting operation of a
portable ship station aboard different vessels of the United States. Each application (FCC
Form 506-Application for a Ship Radio Station License) for a portable ship station license
must include a showing that:

i)

The station will be operated aboard a vessel.

ii)

A station license for portable equipment is necessary to eliminate separate applications
to operate a ship station aboard different vessels.

c)

Marine Utility Station: A utility station in the maritime mobile service consists of one or more
hand held transceiver units licensed under a single authorization. Each unit is capable of

operating while being hand carried by an individual. There are two types of stations autho-

rized:

i)

Marine Utility Coast- when transmitters are located on land; may communicate directly to

vessels only.

ii)

Marine Utility Coast/Ship- transmitters from land may communicate with vessels or when
aboard a vessel, may communicate with other vessels or coast stations.

NOTE: A Marine Utility Ship license will not be authorized.

35

The station operates under the rules applicable to a private coast station when the unit (s) are on land
and under the rules applicable to a ship station when the unit (s) are aboard a vessel. FCC Form 503,

application for Land Radio Station License is used when applying for a marine utility License.

USAGE GUIDE

m

.*

.

Emwgmcy

NSViptii

PZJ

Cslling

u. s. coast Guwd

state control

Environmental

WMhW

36

Emergency

Channel 16
If:

l

Your ship is

sinking, or on fire

l

Someone has been lost overboard

l

There exists grave and imminent danger

Use this distress procedure:

l

Select Channel 16

l

Say “Mayday, Mayday, Mayday.”

l

Give call sign and boat name

l

Give location of boat

l

Describe emergency

l

If no answer, repeat; then try and other

channel

Caution

Every ship at sea is obliged to give absolute prior­ity to radio communications relating to ships in

distress-it is vital that false distress calls or mes-

sages not be broadcast.

:::y:::::

.*I.-.*.*.

ELI

Calling

Channel 16 & Working Channel

If-you wish to establish communications with
another station

And-you know which working channel the sta­tion is monitoring

Then-initiate the call directly on that working
channel

If-you wish to establish communications with
another station

And-you do not know what working channel the
station may be monitoring

Theninitiate the call on channel 16. After con­tact is made switch to a working channel.

NOTE: Due to congestion on channel 16

caused by frequent hailing of other vessels,

the FCC has approved channel 9 as a second

hailing channel.

Avoid excessive calling and radio checks

Always monitor before transmitting

Never interrupt emergency communications

37

‘Monitoring

Channel 16 & Working Channel

When-your VHF station is turned on and it is not
being used to exchange communications

You Must-monitor channel 16

As an operating convenience, many stations
employ a second receiver so that they can moni­tor a working channel and channel 16 simulta­neously.

Intership Safety

Channel: 6

Vessels: Any

Use: Communicating navigational and weather

warnings to other ships

Communicating with U.S. coast Guard stations or
other vessels during search and rescue opera­tions

Between: Ship-to-ship only

Comments: Do not use for routine communica­tions. This is a safety channel.

38

U.S. Coast Guard

Navigation

Channel: 22

Channel: 13

Vessels: Any
Use: Working channel for exchange of communi-

cations with stations of the U.S. Coast Guard

Between: Ship to U.S. Coast Guard ship, coast to
aircraft stations

Comments: U.S. Coast Guard does not regularly

monitor this channel. Establish contact on chan-

nel 16 and shift to channel 22 as directed.

Vessels: Any
Use: Safety communications pertaining to the

maneuvering of vessels or the directing of vessel
movements

Primarily ship-to-ship and secondarily ship-to

coast

This is commonly called the Bridge-to-Bridge
channel. Large vessels and towboats depend on

this channel for their safe navigation, Railway or
highway bridges which open for ship navigation
often operate on this channel.

Bridge-to-Bridge stations must reduce power to
one watt for routine operations.

39

Port Operations

Channels:

512, 14,20,65,66,73,74, [77]

Vessels: Any

Use: Messages relating to the operational han­dling, movement and safety of vessels in or near
ports, locks and waterways

Between: Ship-to-ship or ship-to-coast

Comments: Channel 77 is limited to communica­tions to and from commercial pilots concerning
the movement and docking of vessels.

Note: Channels 11, 12, 13 and 14 are used for
vessel traffic service on the Great Lakes, St.
Lawrence Seaway and designated major ports.

Comments: Channel 72 may not be used for ship
to coast communications. Channel 9 is shared
with Commercial users.

If you regularly monitor one of these channels
with a second receiver, please notify frequently-
called stations of this practice. Help reduce con­gestion on channel 16.

40

Non commercial

(Boat Operations)

Channels:

19,68,69,71,72

78

Vessels: Recreational boats and any others not

used primarily for commercial transport.

Use: Communications pertaining to the needs of
the vessel

(i.e.,

fishing, rendezvous, maneuvers,

berthing, scheduling of repairs, provisioning, etc.)

Between: Ship-to-ship

or

ship to limited coast sta-

tions

Commercial

Marine Operator

Channels: 7, 8, 9, 10,

11,

18, 19, 67, 79,

80, 1881

Channels:

24, 25,

26, 27, 28, 84, 85, 86, 87, 88

Vessels: Those used primarily for commercial

Vessels: Any
transport of persons or goods, or engaged in ser­vicing other vessels

Use: Communications pertaining to the purpose
for which the vessel is used

Use: To place a telephone call to any location in

the world or to a vessel outside of your transmit-

ting range

Between: Commercial transport vessels (ship-to-

Between: Vessels and public coast stations

ship) or between commercial transport vessels
and limited coast stations

Channels 8, 67 and 88 may not be used for

ship-

Comments: Contact the marine operator on the

to-coast communications channel assigned to your navigating area.

If unable to determine this channel, use channel

16.

Recreational boats are not permitted to use these

Be patient. Do not interrupt calls in progress.

channels

Avoid excessive calling if the operator does not
answer-give the operator a chance to reply.

Channel 88 not available on Great Lakes and St.

Lawrence Seaway.

41

State Control

Environmental

Channel: 17

Channel: 15
Vessels: State and local government
Use: Coordination, regulation and control of boat-

ing activities and the rendering of assistance to
vessels.

Between: Ship and coast stations associated with
state and local governments.

Vessels: Any (receive only)

Use: Broadcast of information concerning the
environmental conditions in which vessels oper­ate-weather, sea conditions, time signals, notices
to mariner, hazards to navigation

Between: One-way broadcast from coast to ship
stations

Note: Currently used for Class C EPIRB emer­gency signals.

Weather

Channels:

WXl,

WX2, WX3

Vessels: Any

Use: Continuous weather information from NOAA
(National Oceanic and Atmospheric Administra-

tion

Between: One-way broadcast from NOAA to any
interested parties

Comments: Receive only. You are not allowed to
transmit on these frequencies.

42

PHONETIC ALPHABET:

To help make call letters more clearly understood, and to assist in spelling out similar sounding or
unfamiliar words, radiotelephone users usually employ the international phonetic alphabet.

Phonetic alphabet:

A- ALPHA

J- JULIET

S- SIERRA

B- BRAVO

K- KILO

T-

TANGO

C- CHARLIE

L- LIMA

U- UNIFORM

D- DELTA

M- MIKE

V- VICTOR

E- ECHO

N- NOVEMBER

F- FOX-TROT

0- OSCAR

G- GOLF

P- PAPA

W-

WHISKEY
X- X-RAY

Y-

YANKEE

H- HOTEL

Q-

QUEBEC

z- ZULU

I- INDIA

R-

ROMEO

43