TRANSMITTER TONE MODULATION TEST.

TM 11-5820-670-30

2-12. TRANSMITTER TONE MODULATION TEST.

PURPOSE

This test checks the frequency and deviation of the 150 Hz tone signal generated in the rt when the

mode switch is set at T/R.

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 port 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

Set equipment controls as indicated in the following table.

2-24