Specifications

TM 11-5820-670-30
2-17. TRANSMITTER AUTOMATIC FREQUENCY SELECTION AND CHANNEL CHANGING TONE
TEST.
(CONT)
TEST PROCEDURE
1. Set frequency selectors to 30.00 MHz and allow radio set to tune; then set MODE SWITCH to
OFF.
2. Change frequency selectors to 75.00 MHz and set MODE SWITCH to T/R.
3. Using a stopwatch, measure time required for tuning.
STANDARD. 7 seconds maximum
4. If radio set takes longer than 7 seconds to tune, see troubleshooting chart 2-20.
5. Monitor test set speaker for 800 Hz tone during tuning process.
STANDARD. Tone present
6. If no tone was present during tuning process, see troubleshooting chart 2-20.
7. Repeat steps 1 through 6 adjusting the frequency selector switches on test set for the following
frequencies.
INITIAL TEST SET
FREQUENCY
-
75.00 MHz
45.00 MHz
46.00 MHz
50.00 MHz
50.95 MHz
30.00 MHz
31.00 MHz
WITH MODE SWITCH OFF,
CHANGE TO:
30.00 MHz
46.00 MHz
45.00 MHz
50.95 MHz
50.00 MHz
31.00 MHz
30.00 MHz
2-18. TRANSMITTER SIDETONE TEST.
PURPOSE
This test checks the power level of the sidetone signal generated in the rt when fm rf is transmitted.
TEST EQUIPMENT AND MATERIALS
Maintenance Kit MK-1035/ARC-131 Fuseholder MX-1730/U
Signal Generator AN/URM-103
Power Supply PP-2953/U
Signal Generator AN/URM-127
Spectrum Analyzer TS-723A/U
All cables are part of MK-1035/ARC
2-35