TRANSMITTER POWER OUTPUT TEST.

TM 11-5820-670-30

2-10. RECEIVER TONE SQUELCH SENSITIVITY TEST. (CONT)

12. Reduce AN/URM-103 output level until audio output indication disappears, and observe

AN/URM-103 output level (squelch dropout).

STANDARD. 0.4 microvolt

13. If AN/URM-103 output level does not indicate 0.4 microvolt, see troubleshooting chart 2-12.

14. Repeat steps 1 through 14, adjusting the TS-2575/ARC-131 for each of the following

frequencies: 41.00 MHz, 52.00 MHz, 53.00 MHz, 65.00 MHz, and 75.00 MHz.

2-11. TRANSMITTER POWER OUTPUT TEST.

PURPOSE

This test checks the rt's ability to transmit a modulated rf carrier with sufficient power. Radio is keyed,

and power output is measured with a wattmeter.

TEST EQUIPMENT AND MATERIALS

Maintenance Kit MK-1035/ARC-131

Radio Frequency Power Test Set TS-2609/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 ail equipment and allow at least 5 minutes

for warmup.

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