ADJUSTMENT PROCEDURE - TM-11-5820-670-300231

TM 11-5820-670-30

2-33. TONE SQUELCH ADJUSTMENT. (CONT)

ADJUSTMENT PROCEDURE

Place +28 VDC ON-OFF switch on test set to ON.

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

and frequency selectors to 60.05 MHz.

3. Set Signal Generator AN/URM-127 amplitude control to 0, and adjust output frequency to

150 Hz.

4. Set Signal Generator AN/URM-103 FUNCTION selector switch to EXT MOD, and adjust for a 10

microvolt output at 60.05 MHz.

5. Adjust Signal Generator AN/URM-127 for 3 kHz deviation as indicated on AN/URM-103 modula-

tion meter.

EL1AT239

6. Adjust potentiometer R5217, on A5500 assembly, so receiver-transmitter just unsquelches.

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