PYE OLYMPIC M201 User manual

Service Manual
Pye Telecommunications Ltd
OLYMPIC Mobile
Radiotelephone Type M201
Publication Ref No. TP169

WARNING
Certain semiconductor devices used in this equipment
contain Beryllium Oxide. If inhaled, dust from this oxide
can be toxic.
No danger can arise from normal handling but no attempt
should be made to tamper with these devices.
They should not be discarded with industrial or domestic
waste.
This Service Manual is for the maintenance of Pye Telecommunications equipment.
The performance figures quoted are typical and are subject to normal manufacturing and service
tolerances.
The right is reserved to alter the equipment described in this manual in the light of future technical
development.
OLYMPIC
VHF AM MOBILE RADIOTELEPHONE
TYPE M201
ISSUE 2
SERVICE MANUAL
MAY 1978
PYE TELECOMMUNICATIONS LIMITED 
CAMBRIDGE 
ENGLAND
Printed in England  © 1976 
TP169

a)
b)
c)
d)
Please send to:
Pye Telecommunications Ltd.
Publications Dept.
Mariners Way
Cambridge CB4 1 BN
England
Please quote:
Title of manual
TP No. and issue No.
Last amendment No. received
Page and/or Fig. No. in error
AMENDMENT LIST
Changes made to the equipment described in this manual are published as amendments which
are dated and consecutively numbered.
Reprints of the manual will incorporate all the amendments to date and an entry to this effect
will be recorded on the amendment list below. Each page affected by amendment action will bear
the amendment number as a suffix to the manual reference number eg TP123/4 indicates that the
page has been corrected by amendment number 4.
Should it be necessary to raise the issue of a manual the amendment numbering will
recommence with No. 1.
Amend't No.

Date

Initials

Remarks
ERRORS & OMISSIONS
The usefulness of this Service Manual depends upon its accuracy. Whilst every endeavour has been
made to minimise errors, some may exist. It is therefore requested that any errors or omissions
noted be advised as follows.—

CONTENTS
Page
SECTION 1
 GENERAL INFORMATION
Summary of Data 
1.1
Introduction 
1.3
Equipment Variations 
1.4
Module Identification 
1.6
SECTION 2 
INSTALLATION AND OPERATION
Pre-installation checks 
2.1
Netting Procedures 
2.1
Test Frequency Crystal Information 
2.2
Contents List (Installation Items).

2.2
Equipment Required 
2.2
Procedure 
2.3
12V Supply 
2.5
24V Supply 
2.5
Amplifier A200 
2.6
Antenna Information 
2.8
Operation 
2.11
SECTION 3 
TECHNICAL DESCRIPTION
Receiver Circuit Summary

3.1
Transmitter Circuit Summary

3.2
Power Supplies and Switching

3.3
Receiver RF Unit (1)

3.4
Receiver Oscillator (8)

3.6
Receiver Multiplier (5)

3.6
10,7 MHz Crystal Filter

3.6
IF Amplifier, Detector, and AGC Module (2)

3.7
Noise Limiter, High and Low-pass Filter (3)

3.8
Squelch IF and Delayed AGC Module (6)

3.8
AF Amplifier Module (4)

3.10
Noise Squelch Module (7)

3.10
Low Power Transmitter Audio Module (9)

3.11
High Power Transmitter Modulator Module (17)

3.12
Transmitter Oscillator (8)

3.12
Transmitter Multiplier Module (10)

3.13
PA Module (11)

3.14
Antenna Filter Module (13)

3.16
Switching Module (12)

3.16
Regulator Module (16)

3.17
Receiver and Transmitter Oscillator Module (8) - Single Channel

3.17
Receiver and Transmitter Oscillator Module (18) - 12 Channel

3.18
Receiver and Transmitter Oscillator Module (18) - 6 Channel

3.18

Page
SECTION 4  SERVICING
Precautionary Notes and General Information
 4.1
Construction  4.2
Equipment Access  4.3
Module Replacement 
4.5
Crystal Information

4.5
Test Equipment  4.6
Alignment Procedures and Performance Checks 
4.7
Receiver Alignment

4.9
Receiver Performance Checks 
4.11
Transmitter Alignment 
4.12
Transmitter Performance Checks 
4.14
Fault Location Checks - Transmitter 
4.14
Detailed Signal Analysis of Receiver

4.16
Fault Location Checks - Receiver

4.18
SECTION 5 
PARTS LIST
Notation 
5.1
Ordering of Spare Parts

5.1
Abbreviations

5.1
Miscellaneous Items
 5.2
Installation Items
 5.2
Main Unit 
5.3
RF Unit (1)  5.4
IF Amplifier, Detector and AGC Module (2) 
5.7
Noise Limiter, High and Low-pass Filter Module (3)  5.8
AF Amplifier Module (4) 
5.9
Receiver Multiplier Module (5) 
5.9
Squelch IF and Delayed AGC Module (6)

5.10
Noise Squelch Module (7)

5.11
Oscillator Module (8)

5.11
Low Power Tx Audio Module (9) 
5.12
Tx Multiplier Module (10)

5.13
Transmitter PA Module (11) 
5.14
Switch Module (12) 
5.17
Antenna Filter Module (13) 
5.17
Motherboard (15) 
5.18
10V Regulator Module (16)

5.18
High Power Tx Modulator Module (17) 
5.19
Optional Servicing Accessories 
5.20
SECTION 6  DIAGRAMS
See List of Illustrations

LIST OF ILLUSTRATIONS
Fig. 2.1
Fig. 2.2
Fig. 2.3
Fig. 2.4
Fig. 2.5
Fig. 2.6
Fig. 3.1
Fig. 3.2
Fig. 3.3
Fig. 4.1
Fig. 4.2
Fig. 4.3
Fig. 4.4
Fig. 5.1
Fig. 6.1
Fig. 6.2
Fig. 6.3
Fig. 6.4
Fig. 6.5
Fig. 6.6
Fig. 6.7
Fig. 6.8
Fig. 6.9
Fig. 6.10
Typical Installation
Connection of 12V supply
Connection of 24V supply
Connection of Amplifier A200
Basic Installation Diagram
Ancillary Items
Receiver Block Diagram
Transmitter Block Diagram
Power Supply Block Diagram
Main Unit Interior View
Diode Probe Circuit Diagram
Test Extension Assemblies Kit
Audio Test Lead
Main Unit - Exploded View
Front and Rear Views of Equipment
Control Module - Component Location Diagram
Motherboard (AT27893) - Complete Component Location Diagram
Motherboard - Receiver Module Locations
M201 Receiver Circuit
Motherboard - Transmitter Module Locations
M201 Transmitter Circuit
Earlier Module PWBs
Circuit Variation - Noise Squelch Module
Motherboard (AT27589) - Complete Component Location Diagram
Page
2.4
2.5
2.5
2.6
2.7
2.9
3.1
3.2
3.3
4.3
4.7
4.9
4.17
5.23

SECTION 1
GENERAL INFORMATION
SUMMARY OF DATA
The Olympic M201 complies with all relevant British Post Office Engineering Department
Specifications and requirements, and will meet all relevant international specifications.
General
Operation
Modulation
Frequency Bands
Power Supply
Weight
A3, single or two-frequency simplex
Amplitude
Band A 148-174 MHz
Band E  68-88 MHz
Band C 117-137 MHz
Band M1 105-108 MHz transmitter
Band M2 138-141 MHz receiver
Band E  68-88 MHz transmitter
Band P8 96-106 MHz receiver
12,5 kHz (S)
25 kHz (V)
Single, 1 to 6, and 1 to 12 channels available
±0,5% of mean operating frequencies
—30°C to +60°C ambient
Standard; ±1OPPM over the temperature range —10°C
to +55°C. Alternative stabilities are available to meet
climatic and mandatory requirements.
12V (nominal) DC supply, positive or negative ground
24V operation available using separate regulator unit
(VR200)
Receive (standby) 250mA approx.
Transmit 3A approx.
OFF/ON Switch
SQUELCH
VOLUME
CHANNEL Selector (1 to 6, and 1 to 12 channel
versions) not fitted to single channel versions
Power On
Transmit
Main Unit:-
246mm wide x 185mm deep x 64mm high
Speaker Unit:-
146mm wide x 67mm deep x 95mm high
Main Unit — 2,3 kg
Speaker Unit — 0,55kg
Channel Spacing
No. of Channels
Switching Bandwidth
Operational Temperature Range
Frequency Stability
Current Consumption
Operator Controls
Indicator Lamps
Dimensions
1.1

Optional Extras
1 to 6, and 1 to 12 channels
24V Regulator (VR200)
25W RF Power Amplifier (A200)
Loudspeaker/Microphone
Range of Selective Call Modules*
*Details available on application
50Q
1W for 0,5uV PD signal input, modulated 30% at
1 kHz
10 db at 0,611V PD signal input, modulated 30% at
1 kHz
2,5W with less than 10% distortion, modulated 30%
at 1 kHz
Receiver
Input Impedance
Sensitivity
Signal/Noise Ratio
Audio Output
Spurious Response Attenuation 
At least 85 db (Image at least 70 db)
Squelch

Electronic, fully noise compensated.
Threshold sensitivity equal to or less than 0,4uV PD
with full 6 db range of adjustment above threshold
level.
Automatic Gain Control 
The output does not increase by more than 6 db when
the input is increased from 0,511V to 0,5V PD.
Transmitter
Output Impedance
Power Output
Spurious Outputs
Modulation Response
50P
6W min, A, C and M Bands
8W min, E, Band at 13,8V DC input
(25W with separate power amplifier A200)
Each less than 2,51.W at antenna socket
Typically +1 to —3 db between 300 Hz and 2,5 kHz
relative to 1 kHz.
Typical figures based on normal operating conditions. Pye policy is one of continuous
improvement, therefore the right is reserved to change specifications without notice.
1.2

INTRODUCTION
Main Unit
The Olympic M201 is a front mount AM VHF mobile radiotelephone designed for two-way
communication between a vehicle and a base station.
The main unit operates on fixed crystal-controlled frequencies in the range 68 MHz — 174 MHz,
using either single frequency or two frequency simplex.
Single channel and multiple channel versions are available. In multiple channel sets provision is
made for up to 12 communication channels spaced at either 12,5 kHz or 25 kHz within ±0,5% of the
centre frequency. The channel spacing can be changed by replacing the 10,7 MHz filter.
The transmitter generates a modulated carrier of between 6 watts and 8 watts, depending on
frequency, into a 50Q load. An add-on RF amplifier (A200) is available which increases the output
to 25W.
The receiver delivers 2,5 watts audio power with less than 10% distortion into a 352 load.
The power supply is 12V DC nominal, but a 2 4 / 1 2V regulator (VR200) is available for use
with 24V DC systems.
The equipment consists of a rugged, lightweight main unit (featuring plug-in modules), an
external loudspeaker and fist microphone, or a combined microphone/loudspeaker assembly.
Space provision is made for any one of a range of selective signalling facilities; up to two
additional facilities can be added by means of the 15-way socket mounted on the back wall of the
main unit casing.
1.3

OPTIONS

1. 
Microphone/Loudspeaker
(a)
Fist Microphone and External Loudspeaker
(b) Microphone/Loudspeaker Assy.

*2. 
Selective Call Facilities
(a) Standard Function — no Selective Call Module. Blanking Plate fitted over frame
aperture.
(b)
Single Selective Call Facility — Internal Module fitted.
(c)
Two (or three) Selective Call Facilities—
Internal Module fitted.
External Socket provided and either one or two External Modules fitted.
Blank Module required with External Socket.
NOTE: * It is necessary to link Mother Board and External Socket pins for certain
Facility requirements. Linkage details are given in Section 4 — Servicing.
EQUIPMENT VARIATIONS
Equipment Label
The sub-assemblies fitted to an equipment will vary according to the role in which it is used.
The complement of sub-assemblies for any particular equipment is indicated by a code number
shown on the Equipment Label (together with the catalogue and serial numbers) attached to the
main unit frame assembly. A typical equipment number is given below.
M 201
01 0 0
1 S AO AO 6 00 00
I
Catalogue
Installation Not Function
Tx
No of
Secondary
Number
Items Used Band
Channels Options
Frequency Label
The transmit and receive frequencies for each channel, when known, are shown on the
Frequency Label attached to the main unit frame assembly.
Should the equipment be supplied less crystals, it should be checked on the recommended
test frequencies as detailed under 'Test Frequency Crystal Information' in Section 2.
Market Code
01

Standard Production
Market

No. of
 Not 
Channel
Code

crystalled  Used

Spacing
channels

Rx
 Primary

Band  Options
1.4

Installation Items
The equipment can be supplied (by agreement) as follows:—
Code:O

Less Installation items
1 
With Installation items, including loudspeaker
9 
With Installation items, less loudspeaker
No. of Crystalled Channels
0 
Less crystals
1 to 9 No of channels crystalled
X 
10 channels crystalled
A to B 11 to 12 channels crystalled
Functions
1 
Standard function, no options fitted. Blank panel fitted
M 
Pyecall module MS1 or
TL1
fitted. To be ordered separately
Channel Spacing
S 
12,5 kHz channel spacing
V 
25 kHz channel spacing
Transmitter Frequency Band
AO 
148 — 174 MHz
CO 
117 — 137 MHz
EO 
68 — 88 MHz
M1 
105 — 108 MHz
Receiver Frequency Band
AO 
148 — 174 MHz
CO 
117 — 137 MHz
E0 
68 — 88 MHz
M2 
138 — 141 MHz
P8 
96 — 106 MHz
Number of Channels
1 
Single Channel fitted
6 
Six channels fitted
B 
Twelve channels fitted
Primary Options
00 
Less Options
09 
Facility socket
29 
Fist mic. assembly
79 
Mic./loudspeaker unit
1.5

Secondary Options
00  Less Options
MODULE IDENTIFICATION
For the purpose of easy identification, each module is allotted a prefix number which is shown
on all circuit diagrams. A prefix number is also given to the Mother Board. It should be noted that
these prefix numbers apply only to the M201 Olympic.
Receiver Modules
(1) 
RF Unit
(5) 
Receiver Multiplier Module
(2) 
IF Amplifier, Detector and AGC module
(6)
Squelch IF and Delayed AGC module
(7)
Noise Squelch Module
(3) 
Noise Limiter and High and Low-pass Filter Module
(4)  AF Amplifier Module
Transmitter Modules
(10)  Transmitter Multiplier Module
(9) 
Low Power Transmitter Audio Module
(17) 
High-power Transmitter Modulator
(11) 
PA module
Shared Modules
(13)  Antenna Filter
(12) 
Tx/Rx Switching Module
(16) 
10V Regulator
(15) Mother board
(8) or TX/RX Oscillator
(18)
(14) Control
1.6

SECTION 2
INSTALLATION AND OPERATION
PRE-INSTALLATION CHECKS
CAUTION
Unless otherwise stated. 'Pozidriv' screws are used
throughout this equipment. Use only the appropriate size
of 'Pozidriv' screwdrivers.
Unpacking Information
Unpack the container and check the items against the Contents List (see Contents List on
page 2.2). Check that no obvious damage has occurred in transit.
NOTES: Pye Telecommunications Ltd, or our authorised agents, must be informed of any
apparent damage or shortage by letter within 10 days of receipt.
Crystals are normally fitted before shipment, and the Frequency Label suitably inscribed
with details of Tx and Rx frequencies for each channel. Should the equipment be shipped
less crystals it should be checked on the recommended Test Frequencies shown page 2.2.
Serviceability Check
Fit 5A fuse into fusebox and connect power supply, set to 13,8V, to equipment, ensuring that
fuse is in the live lead. Using Signal Generator, Audio Output meter, and RF Output meter (see
Section 4: Test Equipment) check equipment serviceability as follows:
(1)
Connect Audio output meter (set to 3Q impedance) across loudspeaker terminals and connect
Signal Generator to antenna socket.
(2)
Adjust Signal Generator to the Receiver operating frequency and inject 1 mV PD, modulated
30% at 1 kHz.
(3)
Carry out Operating Instructions (TP919) for RECEIVE and check that a reading of 2W is
obtained on the audio output meter.
(4)
Disconnect Signal Generator.
(5)
Connect RF Output meter to the antenna socket and carry out Operating Instructions for
TRANSMIT. Check that Output Meter Reading is not less than 6W (A, C and M bands) or
8W (E band).
(6)
Disconnect test equipment. Connect antenna and loudspeaker.
NETTING PROCEDURES
NOTE: Before carrying out netting procedures ensure that the base station transmitter and
receiver are correctly tuned, as indicated in the appropriate service manual.
Receiver. With carrier received from base station, hold marker oscillator near IF section. Adjust
appropriate receiver oscillator trimmer for zero beat note. Repeat for each channel if more than one
fitted.
2.1

Transmitter. Transmit (carrier only) to base station. Check audio beat as above at base station
receiver. Adjust mobile transmitter oscillator coil to give zero beat at base station. Repeat for each
channel, if more than one fitted.
NOTE: Apart from the above procedures, adjust oscillator trimmer coils with reference to a
frequency sub-standard only.
TEST FREQUENCY CRYSTAL INFORMATION (for equipment supplied 'Less Crystals')
Band
Rx or Tx
Test
Xtal
kHz
Multiplication
Test
Frequency
kHz
Rx
Injection
A Tx
56,000 X3
168,000
Rx
48,700 X3 (+10,7 MHz) 156,800
146,1 MHz
C
Tx X3
Rx X3 (+10,7 MHz)
M1 Tx 53,250 X2 106,500
M2 Rx 50,0666 X3 (-10,7 MHz)
139,500
150,2 MHz
E Tx 37,000 X2
74,000
Rx
47,000
X2 (-10,7 MHz)
84,700 95,4 MHz
P8

X2 (+10,7 MHz)
CONTENTS LIST (Installation Items)
Description
Main Unit M201
Loudspeaker Assembly
Fist Mic. and lead assembly
Microphone Rest assembly
Slot pan S/T scr. st. No. 10 x
1
/ 2 "
Slot pan S/T scr. st. No. 6 x
3
/ 8 "
Pan pozi scr. S/T No. 6 x 1"
Pan pozi scr. S/T No. 6 x 3 /4"
Cradle Assembly
Terminal Block, 2-way
Fuseholder
Fuse 5A
Coaxial plug BNC
Module extractor
Equipment extractor tool
Cable clamp
Support
Antenna and lead
Part No.

Remarks
AT05294
AT10877/2
AT29692/01
AT27661
QW41208/A

2/loudspeaker,
4/cradle assembly
QW41206/A

2/Mic. Rest Assembly
QJ07663

2/Fist mic. cable clamp
QW41212/A

2/Fuse box
AT12405
BT30080

Power leads
FH02837
F F99006
FP00032

Antenna socket
BT17167

PWB's
BT28971/01

Main Unit removal
BT16043

Microphone lead
BT26617

Microphone lead
Despatched separately when ordered
INSTALLATION
Equipment Required
Circle Cutter, Holesaw, or Socket Punch
Drills (see sizes below)
Electric Drill for drilling mounting holes
'Pozidriv' and Flat-Bladed Screwdrivers for mounting screws
Soldering Iron
2.2

BOTTOM MOUNTING
75mm
ENSURE THAT FRONT PANEL
OVERHANGS MOUNTING SURFACE TO
ALLOW OPERATION OF ALL CONTROLS
///
75mm
TOP MOUNTING
OR
Drill Sizes
Drill for No. 6 Self-Tapping Screws — 2,8mm
Drill for No. 10 Self-Tapping Screws — 3,4mm
NOTES: The cradle to be fitted can be used as a drilling template.
Details of the screws required to secure the installation items are shown in the Contents
List.
If possible, the cables should be routed away from the areas of extreme heat, and possible
battery acid leakage; to minimise noise pick-up, they should be kept clear of ignition
circuits.
Wherever possible, existing holes in the bulkhead should be used. If metalwork has to be
drilled, ensure that the new holes are fitted with rubber grommets.
Refer to Basic Installation Diagram Fig. 2.5 throughout this procedure.
Procedu
re
1. Check package against Contents List.
2.
Determine location of installation (see typical installation layout shown).
When finalising the locations of the above items, the length of the following cables should be
noted:—
Microphone Lead Assembly (a) Contracted 86cm (34 in.) (b) Extended 112cm (44 in.).
Power Leads: 500mm
Loudspeaker lead (attached to M201) 203mm (8 in.)
Loudspeaker lead (attached to loudspeaker) 1220mm (4 ft)
3. Remove cradle assembly using the extractor tool.
NOTE: The equipment is supplied with the Carrier Plate fitted to the top cover.
To interchange covers, set the OFF/ON switch to ON (upwards) and insert pointed
instrument such as a ball point pen in the access hole. Remove front panel to expose
fixing screws. Remove screws and interchange covers
2.3

STRAIN RELIEF
CLAMP
DO NOT STRAIN
LEFTHAND SIDE 
OR  RIGHTHAND SIDE OF MOBILE
TRIM OFF
EXCESS BRAID
`
T
GASKET
 F ERRULE
CLAMP
NUT 
GASKET
FERRULE
TIGHTEN CLAMP NUT BEFORE
SOLDERING CENTRE CORE
TO CENTRE PIN
 PLUG
SOLDER
HERE
CONNECTOR BODY
CENTRE
PIN
4.
Install Cradle Assembly (locating spring to front), Loudspeaker Rest and Strain Relief Clamp.
(See Contents List for Fixing Screws).
5. Mount Antenna
See Antenna Fixing Instructions for fitting details. Connect feeder plug as shown.
For best all-round performance of the radiotelephone, the antenna should be mounted on the
centre of vehicle roof.
Fig. 2.1 — Typical Installation
2.4

24V WITH REGULATOR
11
I
P
~
51 ' 4 - Tho
EU I
[ I
II
a YEL
BROWN
LOw GREEN  1
BLUE
6. 
Connect Installation Supply to Vehicle Battery as follows:-
12V Supply
NOTES: Cable (not supplied) used between battery and connector block should be
2,5mm (70/0070).
Power leads are colour coded: Red = Positive Black = Negative.
Fig. 2.2 — Connection of 12V Supply
(a)
Secure Fuse Box 0 close to Battery 0
(b)
Wire from Battery to Connector Block © (Live Lead via Fuse Box; if Floating Ground
fuse both leads)
(c)
Connect M201 
Power Leads to Connect Block 0
(d)
Plug-in Fist Mic (or Handset) and Loudspeaker 0
(e)
Remove Protection Cover on Antenna Socket and plug-in Antenna Feeder 0
Air Check
Carry out a test call, and check that the equipment is correctly netted in to the base station.
24V Supply
Regulator VR200 13 required.
1.
Connect 24V supply to VR200

input,
fusing both leads at 5A.
2. Connect VR200 12V output to terminal
block 0 , fusing positive and negative leads
(brown and blue) at 5A.
3.
Connect main unit power supply to
connector block ® as shown.
4.
Connect the VR200 yellow/green core
between the radiotelephone and terminal
blocks 0 and 03 ,
as shown.
Fig. 2.3 — Connection of 24V Supply
2.5

0
0
L T'
N -OUTPUT
RED
__BLACK
TNC-INPUT
0
BROWN
BLUE
YELLOW/GREEN
BELE
BROWN
YELLOW/GREEN
•
•
0
•
0 0
5A
O
O
12A
0
0 0
0
12V
0
NEGATIVE GROUND
0
NOTE
SWITCHING LINE SHOWN IN DOTTED LINE
12V
0
POSITIVE GROUND  FLOATING GROUND
A200 
M201

A200
0
O
0
0
0
M201
12A
 5A 12A
5A
0

12V
Amplifier A200 (Not suitable for 24V systems)
NOTES: Independant wiring, fused at 12A, is required for the A200 power supply. A 3-core cable
is supplied. If required, the third core can be connected via the power supply input socket
to the Main Unit OFF/ON switch to provide power switching. Fixing screws and their
sizes and disposition are contained in the bagged items supplied with the A200.
The amplifier unit is contained in a weatherproof diecasting, which should if possible be
mounted in a clean dry location.
1.
Site the amplifier 
on the route of the antenna feeder. Fix the mounting plate and secure
amplifier to it, with SKB (N-type socket) nearest the antenna.
2.
Cut the antenna feeder to suit the amplifier location. Terminate the free end of the coaxial
cable still attached to the antenna with the N-type plug and terminate the free end of that
attached to the radiotelephone with a TNC-type plug. Connect plugs to the appropriate
amplifier sockets.
3. Position terminal block (3 within 0,5 metres (1' 8") of the amplifier, and connect the
amplifier 3-core cable to it.
4. Fit fuseholder  close to the battery. Connect the permanent wiring from the vehicle battery
to terminal block 
fusing the live lead at 12A. (Refer to Fig. 2.4 for floating ground
systems).
Fig. 2.4 — Connection of Amplifier A200
2.6

TYPE TNC
E - ] 
CUT ANTENNA
FEEDER TO SUIT
POSITION OF A200
00 0
CONNECT ANTENNA PLUGS SUPPLIED WITH A200
TYPE N
lb
]=,
TYPE TNC
- 
9 5mm
 SOLDER SECURELY HERE
SOLDER SECURELY HERE
El
7mm
CLAMP PLAIN
FERRULE REAR
 MALE
NUT GASKET  INSULATOR CONTACT
0 4mm
PLUG BODY
EMI
0 4mm
01/1611,93 felAffi /Ai  ° Z4I
The A200 power supply is now permanently connected, and the amplifier is switched by the
presence of an RF signal. Should power switching from the Radiotelephone OFF/ON switch be
required, proceed as follows:
(i)
Disconnect the battery supply from terminal block ® . Connect the switched negative
to terminal block 0 .
(ii)
Make a connection between this lead and the yellow/green core of the A200 cable at
terminal block
(iii)
Remove the top cover of the A200, and cut links 2/3 and
4 / 5 on the motherboard.
(iv)
Re-connect battery leads to terminal block 0 .
2.7

LEGEND
NOTE: 
These indicator numbers apply to all drawings shown in this
Installation Procedure
1.
Main Unit
7.
Microphone and Lead Assy.
2.
Antenna and Feeder Cable
(Includes Strain Relief Clamp)
3.
Loudspeaker Assy.
8.
Microphone Rest
4.
2-Way Connector Block
9.
Cradle Assy.
5. Fuse Box
10.
Cradle Extractor
6.
Vehicle Battery
11.
Blanking Plate (or Facility Module)
12.
Loudspeaker Lead
Fig. 2.5 — Basic Installation