TRANSMITTER AUTOMATIC FREQUENCY SELECTION AND CHANNEL CHANGING TONE TEST.

TM 11-5820-670-30

2-17. TRANSMlTTER AUTOMATIC FREQUENCY SELECTION AND CHANNEL CHANGING TONE TEST.

PURPOSE

This test checks the rt's ability to tune to a selected frequency automatically in a specified period of

time. This test also checks the 800 Hz tone generated when the rt is transmitting.

TEST EQUIPMENT AND MATERIALS

Maintenance Kit MK-1035/ARC-131

Power Supply PP-2953/U

Stopwatch

All cables are part of MK-1035/ARC

Connect equipment as shown in test setup diagram. Turn on all equipment and allow at least 5 minutes

for warmup.

EL1AT152

INITIAL EQUIPMENT CONTROL SETTINGS

Set equipment controls as indicated in the following table.

CONTROL AND SWITCH SETTINGS

POSITION/SETTING

CONTROL OR SWITCH

EQUIPMENT

T/R

MODE SWITCH

TS-2575/ARC-131

DIS

SQUELCH

30.00 MHz

FREQ sel

VOL

Maximum (clockwise)

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