Table 5-3. Radio Receiver-Transmitter RT-980/GRC-171 Performance Tests (Sheet 16 of 17)

TO 31R2-2GRC171-2

TM 11-5820-815-14

NAVELEX 0967-LP-544-5010

CONTROL SETTINGS

OPERATION OF TEST

AND OPERATION

PERFORMANCE

STEP

EQUIPMENT

POINT OF TEST

OF EQUIPMENT

STANDARD

TRANSMITTER KEYING (Cont)

Disconnect audio

oscillator from

RT-980/GRC-171.

RADIO RECEIVER-TRANSMITTER OPERATIONAL PERFORMANCE

Connect RT-980/GRC-

Set RT-980/GRC-171

171, C-7999/GRC-171,

switches as follows:

and antenna as for nor-

REMOTE/LOCAL

mal operation. Connect

to LOCAL,

Handset H-169U to

SQUELCH to ON,

RT-980/GRC-171

PTT/CARRIER TEST

DYNAMIC MIC jack.

to PTT, TEST

meter selector to

OFF, POWER to ON,

and frequency selec-

tor to an authorized

assigned frequency.

TEST meter

Key transmitter and

(A10A1M1)

rotate the TEST

meter selector

through the follow-

ing settings and

verify readings:

FWD PWR

16 to 24 watts.

RFLD PWR

Not more than 25%, of

forward power.

% MOD (talk into

Observe needle

handset micro-

movement.

phone on this

setting)

TEMP

Meter does not read

in OVER TEMP range.

+26V

26 + 1.5 V dc.

+22V

22 + 1.5 V dc.

+12V

12 + 1.0 V dc.

+5V

5.1 + 0.5 V dc.

-12V

12 1.0 V dc.

Connect digital multi-

Key transmitter.

meter to the following

RT-980/GRC-171 front

panel test points and

verify readings:

TUNE VOLT

-0.54 to -0.60 V dc

(Cont)

(A10A1TP3)

(300.000 MHz).

5-22