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LBI-31567
OPERATION
Complete operating instructions for the Two-Way Ra-
dio are provided in the Operator's Manual. The basic
procedures for receiving and transmitting messages in mo-
bile combinations are as follows:
TO RECEIVE A MESSAGE
1. Turn the radio on by turning the OFF-VOLUME
control halfway to the right.
2. Turn the SQUELCH control clockwise (to the
right) as far as possible. A noise will be heard from
the speaker.
3. Adjust the VOLUME control for the desired lis-
tening level.
4. Turn the SQUELCH control counter-clockwise to
the left until the noise just cuts off.
5. In multi-frequency radios, select the desired chan-
nel.
The radio is now operational.
TO TRANSMIT A MESSAGE
1. Turn the radio on and select the proper channel.
2. If a lengthy message (or several messages) are to
be sent, the vehicle engine should be running to
maintain the battery charge.
10
3. Pick up the microphone and listen briefly to the
speaker to make sure that no one else is using the
channel.
4. Press the Push-To-Talk (PTT) switch on the mi-
crophone and send the message. The red transmit
light on the control unit will glow each time the
PTT switch is pressed.
MAINTENANCE
The use of microcomputer technology allows self-di-
agnostic maintenance routines to be incorporated in the
microcomputer software. These routines are easy to run
and provide a quick analysis of microcomputer and fre-
quency synthesizer operation.
The service section of this manual contains the diag-
nostic routines and other maintenance information to serv-
ice this radio. The service section includes:
• System interconnection
• Mechanical layout
• Disassembly procedures
• Replacement of IC's, chip capacitors, and
resistors
• Microcomputer self-diagnostics
• Alignment procedures for the transmitter and
receiver
• Troubleshooting flow charts and waveforms
Printed in U.S.A.
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