150 Hz TONE MODULATION FREQUENCY AND DEVIATION ADJUSTMENT.

TM 11-5820-670-30

2-32. 150 Hz TONE MODULATION FREQUENCY AND DEVIATION ADJUSTMENT.

TEST EQUIPMENT AND MATERIALS

Maintenance Kit MK-1035/ARC-131

Electronic Counter Digital Readout AN/USM-207

Modulation Meter ME-57/U

Power Supply PP-2953/U

All cables are part of MK-1035/ARC

TEST SETUP

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

for warmup.

EL1AT148

ADJUSTMENT PROCEDURE

1. Place +28 VDC ON-OFF switch on TS-2575/ARC-131 to ON.

2. Place XMTR HI-LO switch on receiver-transmitter to LO.

3. Set WIDE BAND - NARROW BAND switch on TS-2575/ARC-131 to NARROW BAND.

4. Set control unit mode switch to T/R, VOL control fully clockwise, SQUELCH switch to

TONE, and frequency selectors to 80.05 MHz.

5. Set RF AMP ALIGN HI-LO switch on TS-2575/ARC-131 to LO.

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