Technisonic Industries Limited TiL-91-DE/S User manual

VHF/AM
PORTABLE TRANSCEIVER
MODEL TiL-91-DE/S
15 WATT PORTABLE SYSTEM NO 910600
(TPS-250)
Installation and
Operating Instructions
Til Document No.
94RE163
Rev. B
April 2005
Technisonic Industries Limited
240 Traders Blvd., Mississauga, Ontario L4Z 1W7 Tel:[phone] Fax:[phone]
web site: www.til.ca

WARNING
Do not make physical contact with antenna when transmitter is on. This unit can produce up to 20
watts of power when operated in high power mode.
WARNING
This unit contains two 12 VDC, 7.2 AMP HR batteries. Ensure terminals are covered in insulating
material during installation or removal. Short circuit of battery terminals may cause damage to
equipment and/or personnel
CAUTION
This unit contains static sensitive devices. Wear a grounded wrist strap and/or conductive gloves when
handling printed circuit boards.
WARRANTY INFORMATION
The Portable Transceiver Model 91-DE/S is under warranty for one year from date of purchase. Failed
units caused by defective parts, or workmanship should be returned to:
Technisonic Industries Limited
240 Traders Blvd.
Mississauga, Amherst, NY
Ontario L4Z 1W7
Tel: [phone] Tel: [phone]
Fax: [phone]
A Page

TABLE OF CONTENTS
Paragraph Title Page
SECTION 1 GENERAL DESCRIPTION
1.1 Introduction ............................................. 1-1
1.2 Description ............................................. 1-1
1.2.1 Portable Case P/N 911010-1 ................................. 1-1
1.2.2 Transceiver Model Til-91-DE P/N 901006-1 ....................... 1-1
1.2.3 Microphone P/N 861902-1 ................................... 1-4
1.2.4 Blade Antenna P/N 911017-1 ................................. 1-4
1.3 Modes of Operation ....................................... 1-4
1.3.1 Transmit/Receive Modes (Local Mode) .......................... 1-4
1.3.2 Scan, Search, and Toggle Modes .............................. 1-5
1.3.3 Local/Remote Operation ..................................... 1-5
1.3.4 AC/DC and Battery Operation ................................. 1-6
1.4 Technical Summary ........................................ 1-6
SECTION 2 PREPARATION FOR USE AND STORAGE
2.1 Introduction ............................................. 2-1
2.1.1 Disassembly General ....................................... 2-1
2.1.2 Assembly General ......................................... 2-1
2.2 Battery Installation & Removal ................................ 2-3
2.2.1 Battery Removal .......................................... 2-3
2.2.2 Battery Installation ........................................ 2-3
2.3 Fixed Channel Frequency Set Up ............................... 2-5
2.3.1 System Configuration ...................................... 2-5
2.3.2 Transceiver Removal ....................................... 2-5
2.3.3 Transceiver Disassembly and Jumper Installation ................... 2-5
2.3.4 Transceiver Replacement .................................... 2-7
2.3.5 Operational Check ......................................... 2-7
2.4 Remote Operation Set Up ................................... 2-9
2.5 Loudspeaker, Headphone Installation ........................... 2-10
2.5.1 External Loudspeaker ..................................... 2-10
2.5.2 Headset ............................................... 2-11
2.6 Operational Check ........................................ 2-11
2.7 Storage ............................................... 2-11
SECTION 3 OPERATING INSTRUCTIONS
3.1 Introduction ............................................. 3-1
3.2 Operator's Switches, Controls and Indicators ...................... 3-1
3.3 General Operating Instructions ................................ 3-6
3.3.1 Preparation for Use ........................................ 3-6
3.3.2 Transmitter Operation ...................................... 3-7
3.3.3 Receiver Operation ......................................... -8
3.3.4 Switching OFF ........................................... 3-9
i

TABLE OF CONTENTS (Continued)
Paragraph Title Page
SECTION 3 OPERATING INSTRUCTIONS (Continued)
3.4 Front Panel Keypad Operation ................................ 3-10
3.4.1 Keypad "Beeps" ......................................... 3-11
3.4.2 Keypad and LCD Display Lighting ............................. 3-11
3.4.3 Transmitter Time-out ...................................... 3-11
3.4.4 Selecting a Frequency ..................................... 3-11
3.4.5 Storing a Frequency to a Channel ............................. 3-12
3.4.6 Recalling a Stored Channel .................................. 3-13
3.4.7 Transmit Inhibit ......................................... 3-13
3.4.8 Toggling Between Two Channels ............................. 3-14
3.4.9 Search Mode ........................................... 3-14
3.4.10 Scan Mode ............................................ 3-14
3.5 AC Operation ........................................... 3-15
3.6 External DC operation ..................................... 3-15
3.7 Battery Operation ........................................ 3-16
3.7.1 Battery Charging ......................................... 3-16
LIST OF TABLES
Table No. Title Page
1-1 Portable System Leading Particulars ............................ 1-7
2-1 Remote Control Connector Functions ............................ 2-9
2-2 Remote Control Jumper Functions ............................. 2-10
3-1 Operators Switches, Controls and Indicators ...................... 3-3
3-2 Channel/Function Selector Keypad ............................ 3-10
LIST OF ILLUSTRATIONS
Figure No. Title Page
1-1 Transceiver - General View (Closed & Open View) .................. 1-2
1-2 Transceiver Front Cover Assembly ............................. 1-3
2-1 Battery Installation and Removal ............................... 2-2
2-2 Fixed Channel Jumper Locations ............................... 2-6
2-3 Remote Operation - Jumper Locations ........................... 2-8
3-1 Transceiver Set Up ........................................ 3-1
3-2 Transceiver Front and Rear Panel Layout ......................... 3-2
ii

1-1
SECTION 1
GENERAL DESCRIPTION
1.1 INTRODUCTION
The VHF/AM Portable Transceiver System P/N 910600-1, manufactured by Technisonic
Industries Limited, is a portable, microprocessor controlled, simplex transceiver complete with
battery, antenna and microphone operating over the frequency range of 117.975 MHz to
138.000 MHz. The Portable base station system is intended for temporary or backup base
station operation in an airport environment. The system can operate from AC power, external
DC power, or internal batteries in local and remote operating modes.
1.2 DESCRIPTION
The 91-DE/S Portable System consists of Portable Case P/N 911010-1, Transceiver Model TiL
91-DE P/N 901006-2, Microphone P/N 861902-1, Blade Antenna P/N 911017-1, and AC
Power Cord P/N 927002-1. The front access cover houses the flexible blade antenna,
microphone, AC power cord, 2.5 Amp SLO blow fuse (AC), 5 Amp fuse (DC) and 2 Allen Keys
Refer to Figures 1-1 and 1-2 for details.
1.2.1 Portable Case P/N 911010-1
ThePortablecaseconsistsofaPowerSupplyModule,RFAmplifierModule,RechargeableLead
Acid Batteries, and Control Board.
1. POWER SUPPLY MODULE - The Power Supply Module provides the DC supply voltage
totheTransceiverandLinearAmplifier,andHousestheBatteryChargerwhichprovides
a combination constant current constant voltage charging and trickle charging to the
two 12 VDC Lead Acid Batteries.
2. RF AMPLIFIER MODULE PA15 - Provides 15 Watt power output when the front panel
switches are set to High. The RF Amplifier is fed by the 7 Watt RF output from the
transceiver. A chassis mounted RF Relay bypasses the RF Amplifier in Receive and Low
Power transmit modes.
3. CONTROL BOARD - provides all the switching functions necessary for hybrid operation
and interfaces the lower half off the control panel to control charging, AC/DC and,
battery operation. It also provides Battery Charged/Low indications.
1.2.2 Transceiver Model TiL-91-DE P/N 901006-2
The Transceiver is a microprocessor controlled VHF/AM transceiver operating over the entire
band of 117.975 to 138.000 MHz in 25 kHz steps. The transceiver will store ten user selected
frequency channels in addition to the resident emergency channel of 121.500 MHz. Frequency
Selection, Storage, Recall, Channel Scan, Search, and Toggle modes are all selected by the 12
key keypad. Current operating frequency is displayed on a backlit liquid crystal display (LCD).

1-2
Figure 1-1 TPS-250 Portable Transceiver - General View (Closed & Open View)

1-3
Figure 1-2 Transceiver Front Cover Assembly

1-4
1.2.2 Transceiver Model TiL-91-DE P/N 901006-2 (continued)
To improve the rejection of interfering signals, dual conversion receiver technology has been
incorporated on the Transmitter/Receiver (Module A1) board used in Model 91-DE Transceiver.
The second IF is 455kHz using a ceramic filter, which is immune to high energy ringing. The
dual conversion module also has a second local oscillator, second mixer and ceramic filter. The
first local oscillator is the original VCO.
The dual conversion receiver board, P/N 003494-1 was implemented into all Technisonic base
stations starting in January 2001. An option label on the chassis will indicate OPTION 94 if
the dual conversion board is installed. It is possible to retro-fit the dual conversion
receiver/transmitter board into older TPS series base station employing the single conversion
board. Please contact Technisonic for availability of an exchange board. Note: If a new A1
Module has been retrofitted the squelch circuit must be aligned for the receiver squelch to
operate correctly.
The dual conversion receiver’s squelch knob must be rotated significantly more clockwise (4
o’clock position) to obtain the same squelch setting (3uV) as a single conversion receiver’s
squelch knob set to the 12 o’clock (straight up) position.
If the dual conversion receiver’s squelch knob is set to the 12 o’clock position, signals with
alevel greater than 0.5uV will open the squelch. At most airports this will not be an adequate
level of squelch. Please be aware of this squelch knob adjustment variance when setting and/or
comparing squelch levels of dual conversion vs. single conversion base stations.
1.2.3 Microphone P/N 861902-1
Ageneral view of the Microphone Assembly Part Number 861902-1, Series 1, is given in
Figure 1-2. The microphone is a rugged hand-held microphone housed in a high impact plastic
case. The dynamic microphone is a noise cancelling type with a two-stage preamplifier,
press-to-talk switch, and a retractable three-core cable terminated by a three-pin, male
contacts, connector which mates with the MIC/PTT connector located on the front panel of
the transceiver. The microphone dc supply for the microphone is supplied by the transceiver.
The microphone is stored in the front access cover for transportation.
1.2.4 Blade Antenna P/N 911017-1
AGeneral View of the blade antenna Part Number 911017-1 is given in Figure 1-2. The Blade
Antenna is a broad band, flexible, whip antenna that operates over the entire frequency range
of 117 Mhz to 138 Mhz. The antenna mounts on the rear panel RF BNC connector. A wing nut
provides convenient angle adjustment. The antenna is stored in the front access panel.
1.3 MODES OF OPERATION
1.3.1 Transmit/Receive (Local Mode)
The transceiver may be operated in either of two modes; transmit or receive, as selected by
the Press-to-Talk (PTT) switch on the microphone.
(1) TRANSMIT MODE - When the PTT switch on the microphone is pressed, the
transceiver operates in the transmit mode. The PTT signal line is grounded by the
microphone PTT switch via the microphone lead and the MIC/PTT connector to the
transceiver. The Tx ON amber LED will go ON, indicating that the transmitter is
activated.

1-5
Transmission will occur on the channel frequency displayed on the Liquid Crystal
Display (LCD). Frequency is determined by keypad entry of the operating frequency or
by recalling a stored channel.
(2) RECEIVE MODE - When the PTT switch on the microphone is released, the transceiver
operates in the receive mode. The Tx ON amber LED will go OFF, indicating that the
transmitter is inhibited. Reception of the frequency displayed on the LCD will occur.
The setting of the SQUELCH CONTROL determines the squelch threshold level. When
the SQUELCH CONTROL is rotated in the counter-clockwise direction, the SQUELCH
INDICATOR green LED will go ON, indicating that the squelch circuit is connecting the
demodulated audio to the VOLUME CONTROL. The setting of the VOLUME CONTROL
determines the audio level produced from the internal speaker. When the VOLUME
CONTROL is adjusted in the clockwise direction, the audio level will increase.
NOTE
When the connector of the external loudspeaker or
head phone is connected to the transceiver
SPEAKER/PHONE jack, the internal loudspeaker is
disconnected and the VOLUME CONTROL will control
the audio level of the external loudspeaker or
headphone.
1.3.2 Scan, Search, and Toggle Modes
1. SCAN MODE - In Scan Mode, the transceiver cycles through the preset Channel
Frequencies and locks on to the first channel received in scan sequence. Audio is
enabledfor5 secondsforoperatoridentification.PressingthePress-to-Talkswitchexits
the scan mode. If there is no operator action then the scan sequence continues in the
scan sequence continuously.
2. SEARCH MODE - In Search mode the transceiver cycles through the preset Channel
Frequencies and locks on to the first channel received in the scan sequence and normal
operation is resumed.
3. TOGGLEMODE-Intogglemodethetransceiveralternates betweenthe currentchannel
selection and the previous channel selected.
1.3.3 Local/Remote Operation
The Portable Transceiver can be operated in Local or Remote modes. An Independent record
output is provided for communication monitoring and recording. Early 91-DE transceiver units
employed a front panel switch to select local or remote operation. Later 91-DE units do not
employ the switch and local/remote operation will occur simultaneously.
1. LOCAL OPERATION - In local operation, voice audio, and keying (PTT) functions are
routed from the microphone to the transceiver. Receive audio is routed to the internal
loudspeaker.
2. REMOTE OPERATION - In Remote operation, transmit audio, keying (PTT), and receive
audio functions are routed over land lines to the 600 ohm remote input. Internal
jumpers can be set for ±DC or ground transmitter keying, and to provide a DC
phantom squelch signal.

1-6
3. RECORD OPERATION - An independent 600 ohm audio output provides combined
transmit and receive audio signals for recording of communication. An Internal jumper
can be set to provide a floating output or ground referenced output.
1.3.4 AC/DC and Battery Operation
The unit can be operated by external 120 VAC, external 28 VDC, or internal battery power.
1. AC OPERATION - An AC power cord P/N 927002-1 (Refer to Figure 1-2) is supplied
in the front access cover of the portable case assembly. During AC operation, the unit
can be operated without batteries installed. With batteries present, the operator can
elect to trickle charge the batteries during AC operation. The AC power supply can be
set for 220 Vac operation via an internal jumper.
2. DC OPERATION - The unit can be operated from an external DC supply within the range
of 21.6 Vdc to 30 Vdc. A DC connector is mounted on the rear of the Portable Case
which mates with DC Power Cable P/N 863701-1 (Not Supplied) to facilitate external
DC operation.
NOTE
Battery Charger does not operate during External DC
Operation. Battery charger will only operate from an
AC Power source.
3. BATTERY OPERATION - Battery operation can be selected from the front panel of the
Portable Case. Two 12 Vdc, 7.2 Amp Hr lead batteries provide battery operation (Refer
to Table 1-1 for Duty Cycle details).
1.4 TECHNICAL SUMMARY
Asummaryofelectrical, operational,mechanicalandphysicalcharacteristicsofthetransceiver,
carrying case, microphone and blade antenna are indicated in Tables 1-1.

1-7
TABLE 1-1 PORTABLE SYSTEM LEADING PARTICULARS
GENERAL:
Power Requirements:
AC Input Voltage/Current .......................100 to 132 VAC @ 1.5 Amp
DC Input Voltage/Current ................... 21.6 VDC to 30 VDC @ 4.5 Amp
Temperature & Humidity:
Operating Temperature Range ................ -25EC(-13EF) to +55EC(+131EF)
Storage Temperature Range ................. -55EC(-67EF) to +65EC(+149EF)
Relative Humidity ............................................100%
Microphone Compression Range ........................................ 35 dB
Antenna:
Impedance ..................................................50 S
Length (Overall) .................................603 mm (23.75 in) MAX
VSWR ..................................................4:1 MAX
Dimensions & Weight (including Handle and Feet):
Width .........................................270 mm (10.6 in) MAX
Height ........................................ 150 mm (5.9 in) MAX
Depth ........................................417 mm (16.4 in) MAX
Weight (with Batteries) ............................... 11 Kg (24 lbs) MAX
TRANSMITTER:
Power Output (Low/High) .............................. 5-10/10-20 Watts
Audio Input .....................................0.05 Vrms to 2.0 Vrms
Speech Processor Dynamic Range ................................. 35 dB
Modulation ..............................................95% MAX
Audio Distortion @ 90% mod (Low Power) ........................10% MAX
Audio Distortion @ 90% mod (High Power) .......................15% MAX
Audio Frequency Response .................... 300 Hz to 2,500 Hz, +1 -3 dB
Spurious Emissions ................................. 60 dB below carrier
Hum and Noise .............................45 dB below modulated carrier
RECEIVER:
RF Input Impedance ................................50S, VSWR 2:1 MAX
Sensitivity (12 dB SINAD) @ 1 KHz 30% Mod ..................... 1.5 µvolts
Selectivity, 25 KHz Channel Spacing:
6 dB Bandwidth ............................. Greater Than 15 KHz
80 dB Bandwidth .............................. Less Than 50 KHz
Adjacent Channel Selectivity ........................... Greater Than 80 dB
Spurious Response Attenuation ..........................Greater than 90 dB
Frequency Stability (-40EC to +55EC) ..................... ±1,000 Hz MAX
RF AGC (5 µvolts to 1 volt) ............................. Audio Level 3 dB
Intermodulation:
Ultimate Sensitivity ...................................... 70 dB
30 µvolts ............................................. 45 dB
300 µvolts ............................................ 30 dB

1-8
TABLE 1-1 PORTABLE SYSTEM LEADING PARTICULARS (Continued)
RECEIVER (Continued):
Unwanted Radiation .......................... Less than 80 µvolts into 50 S
Hum & Noise @ 1mV RF 30% MOD ............................... 40 dB
Loudspeaker Output .................................. 3 W MAX
Phone Output ................................ 100 mW into 600 S
Audio Distortion 1mV RF Input, 30% MOD ...................5% MAX
Audio Distortion 1mV RF Input, 90% MOD ........................10% MAX
Audio Output Limiting .................... Less than 1 dB @30 to 100% MOD
Audio Frequency Response 300 Hz-2500 Hz ....................... +1 -3 dB
Audio Acquisition Time ............................. Less than 100 msecs
Audio Squelch Characteristics:
Squelch Type ........................... Noise and Carrier Operated
Carrier Operated Squelch ......................... Adjustable 2 to 15 µvolts
BATTERY AND BATTERY CHARGING:
Battery Operation:
Lo Power 50% Duty Cycle ................................... 5 Hrs MIN
Hi Power 50% Duty Cycle ................................... 2 Hrs MIN
Receive Only (Audio output less than 3 W) ....................... 12 Hrs MIN
Battery Charge Cycle:
95% Capacity ............................................... 6 Hrs
100% Capacity .............................................. 8 Hrs
Battery Charger Voltage ................................. 27.5 Vdc MAX
Battery Charger Current ...................................3 Amps MAX
Battery Voltage ............................... 2x12 VDC @ 7.2 Amp Hrs
REMOTE CONTROL:
Remote TX:
Range .........................................+10 dBm to -18 dBm
Impedance .......................... 600 Sfloating with respect to ground
Remote RX:
Range .........................................+10 dBm to -15 dBm
Factory Setting ............................................. -8 dBm
Impedance .......................... 600 Sfloating with respect to ground
Phantom Squelch .............................. 15-17 Vdc, 2 Vdc for Mute
Remote Recorder:
Range ........................................ +10 dBm to -20 dBm
Factory Setting .............................................-8 dBm
Impedance .......................... 600 Sfloating with respect to ground

2-1
SECTION 2
PREPARATION FOR USE AND STORAGE
2.1 INTRODUCTION
This section provides the information required for custom configuration of the system, removal
and replacement of batteries, and storage. Custom system configuration includes customizing
channel frequencies and remote control set up.
Channels 0 to 9 can be configured for fixed frequency operation including transmit inhibit on
preselected channels.
Remote control functions can be tailored for ground or ±DC, single line, or land line keying.
Optional Phantom squelch signal can be enabled or disabled. Record transmit and receive audio
signals can be floated or ground referenced.
2.1.1 Disassembly General (Refer Figure 2-1)
(1) Remove front access cover (1) by releasing 2 clip fasteners.
(2) Remove and retain 4 bottom screws (2) securing cover (5) to chassis (6).
(3) Remove and retain 2 top screws (item 3) securing cover to chassis.
(4) Remove and retain 2 screws (item 4) securing cover to heatsink (7).
(5) Slide cover forward, lift clear of chassis.
2.1.2 Assembly General (Refer to Figure 2-1)
(1) Position cover (5) on Chassis (6) by aligning cover screw holes with chassis threaded
inserts.
CAUTION
The two center screws are secured to an aluminum
heatsink. Care must be taken to avoid stripping
heatsink threads. Install screws in the sequence
indicated to finger tightness. Tighten screws in the
same sequence.
(2) Install 2 screws (4) securing cover to heatsink (7).
(3) Install 2 top screws (3) securing cover to chassis.
(4) Install 4 bottom screws (2) securing cover to chassis.

2-2
Figure 2-1 Battery Installation and Removal

2-3
2.2 BATTERY INSTALLATION & REMOVAL
2.2.1 Battery Removal
Remove Cover Assembly as described in paragraph 2.1.1. Refer to Figure 2-2 for location of
items indicated below.
(1) Disconnect (+) and (-) Terminal lugs (12) on Battery (13).
(2) Disconnect 3 Ribbon Cable Connectors (9) on Control Board (8).
(3) Disconnect External DC cable connection (10) on Control Board.
(4) Disconnect TP1 Connector (11) on Control Board.
(5) Removeandretain2 screws, 2 lockwashers, and 2 nuts(14)securingDconnector (15)
to rear of chassis (6).
(6) Remove and retain 4 screws (16) securing Control Board Bracket (17) to chassis (5).
(7) LiftControlBoardBracketslightly,slidetowardfrontofchassis,andliftclearof chassis
lip (18).
(8) Lift Bottom edge of Batteries and slide forward to clear chassis lip. Lift Batteries clear
of chassis.
Replace Cover Assembly as described in paragraph 2.1.2.
2.2.2 Battery Installation
Remove Cover Assembly as described in paragraph 2.1.1. Refer to Figure (2-1) for location of
items indicated below.
CAUTION
Batteriesare shipped chargedto 80%capacity.Damage
to equipment and personnel may result if care is not
taken to prevent accidental shorting of Battery
terminals.
NOTE
Batteries are shipped with anti-corrosive agent on
battery terminals. DO NOT remove agent when
installing batteries.
(1) Disconnect UHF connector (19) from transceiver (20).
(2) Position Batteries (13) flush with chassis lip bracket (18).
(3) Position Control Board Bracket Assembly (17) over Batteries and secure to chassis (6)
with 4 screws (16).

2-4
(4) Loop RF Cable (item 19) between Linear Amplifier (21) and Control Board Bracket.
Reconnect to Transceiver.
(5) Secure D-type Connector (15) to rear of chassis with 2 screws, 2 lock washers, and
2 nuts (13).
NOTE
Screws are difficult to position in unit. Tilt entire unit
and hold screws in position with tweezers or small
needle nose pliers.
(6) Connect 3 Ribbon Cable Connectors (9) on Control Board (8).
(7) Connect External DC Cable connection (10) on Control Board.
(8) Connect TP1 Connector (11) on Control Board.
(9) Connect (+) and (-) Terminal lugs (12) on Battery (13).
(10) Replace Cover Assembly as described in paragraph 2.1.2.
(11) Refer to paragraph 3.7.1 for battery charging information.

2-5
2.3 FIXED CHANNEL FREQUENCY SET UP
The following procedure fixes preselected channel frequencies and inhibits transmit on receive
only channels. After completion of this procedure the operator will be able select stored
channels only for receive or transmit. Keypad entry of frequencies is disabled.
2.3.1 System Configuration
(1) Configure channel frequencies as desired (Refer to Section 3.4.5).
(2) Select channels for Rx only (transmit inhibit) operation (Refer to paragraph 3.4.7).
2.3.2 Transceiver Removal
(1) Remove Case Assembly Cover. Refer to paragraph 2.1.1 and Figure 2-1.
CAUTION
Failure to disconnect batteries before removing UHF
connector from transceiver may result a in short circuit.
Ensure that damage does not result from UHF
connector coming in contact with exposed circuit card
on rear of power supply by disconnecting battery
terminal lugs first.
(2) Disconnect (+) and (-) Terminal Lugs (12) on Battery (13).
(3) Disconnect UHF connector (19) and External DC Cable (10) from rear of transceiver
(20). Refer to Figure 2-1.
(4) Remove and retain 2 screws, and 2 lockwashers (22) securing Ribbon Cable (23) to
D connector on right side of transceiver (20). Remove connector from socket.
(5) Remove and retain 2 screws, and 2 washers (24) securing Transceiver to chassis (6).
(6) Slide Transceiver to rear of chassis. Lift Transceiver clear of chassis.
2.3.3 Transceiver Disassembly/Assembly and Jumper Installation
(1) Remove and retain 12 flathead screws (1) and 3 Panhead screws (2) securing
transceiver top cover (3) to chassis (4). Refer to Figure 2-2.
(2) Position Jumper J6 on pin 1 and pin 2 to disable keyboard entry of frequency selection
and lock operating configuration.
(3) Position Jumper J6 on pin 2 and pin 3 to enable keypad frequency selection and unlock
operating configuration.

2-6
Figure 2-2 Fixed Channel Jumper Locations

2-7
(4) Position Transceiver Cover (3) on Chassis (4). Ensure that cover holes are aligned with
threaded inserts.
(5) Position 12 flathead screws (1) and 3 Panhead screws (2) through cover (3) holes into
chassis (4) threaded inserts. Tighten screws with fingers.
(6) Tighten screws securing Transceiver Cover (3) to Chassis (4).
2.3.4 Transceiver Replacement
(1) Position Transceiver (20) in Case Assembly. Refer to Figure 2-1. Slide transceiver to
front of Case Assembly. Ensure that Transceiver Front Panel is flush with front of Case
Assembly and Transceiver mounting holes align with chassis threads. Tighten screws.
(2) Position 2 Panhead screws and 2 washers (24) in threaded holes. Secure Transceiver
to Chassis (6).
(3) Install 2 panhead screws and 2 lockwashers (22) securing Ribbon Cable (23) to D
Connector.
(4) Connect UHF Connector (19) and External DC Cable (10) to connectors at rear of
Transceiver.
(5) Replace Case Assembly Cover (Refer to paragraph 2.1.2).
2.3.5 Operational Check
(1) Turn Unit On (Refer to paragraph 3.3).
(2) RecallChannels"0" through"9"(Refertoparagraph3.4.6).Ensurethatthefrequencies
indicated for each channel displayed correspond to those selected.
(3) Transmit on each channel. Observe that the TX Led (Refer to Figure 3-2, for location)
does not light on channels selected to operate exclusively in receive mode.
(4) Enter a valid frequency (within the frequency range of (117.975 MHz to 138 MHz) that
differs from the frequency stored in channel "0".
(5) Store the frequency in channel "0" (Refer to paragraph 3.4.5).
(6) Recall Channel "0" frequency. Channel "0" frequency displayed shall be the same
frequency entered before Locking the operating configuration (ie. different from the
frequency entered in step 4).
(7) Perform Steps 4 through 6 for each channel.

2-8
Figure 2-3 Remote Operation - Jumper Locations