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|  TM 11-5820-401-34-3/0967-LP-432-3060
3-4. NEW SQUELCH TEST. (CONT)
5. If LO RF UV control setting is more than 0.5 when CALL lamp lights, or if CALL lamp
does not light, see troubleshooting chart 3-3.
6. Remove cable from R-442/VRC ANTENNA port.
K5002 will not be energized to supply the 16 volts necessary to turn on the audio amplifiers; therefore,
the receiver is squelched.
7. If CALL lamp does not go out, see troubleshooting chart 3-3.
8. Reconnect cable to R-442/VRC ANTENNA port.
STANDARD. R-442/VRC CALL lamp should light.
9. If CALL lamp does not light, see troubleshooting chart 3-3.
NEW SQUELCH Test at 41.00 MHz
10. Change R-442/VRC MC-TUNE-KC switch to 41.00 MHz and BAND to
.
11. Turn AN/URM-103 BAND SWITCH to
and RF TUNING control for 41.00-MHz meter
indication.
12. Adjust AN/U RM-103 RF TUNING control for 41.00-MHz display on AN/USM-207. To produce
display, see note under step 1 and readjust RF TUNING control until AN/USM-207 indicates
41.00 MHz.
13. Repeat steps 2 through 9.
NEW SQUELCH Test at 52.00 MHz
14. Change R-442/VRC MC-TUNE-KC switch to 52.00 MHz.
15. Turn AN/URM-103 RF TUNING control for 52.00-MHz meter indication.
16. Adjust AN/URM-103 RF TUNING control for 52.00-MHz display on AN/USM-207. To produce
display, see note under step 1 and readjust RF TUNING control until AN/USM-207 indicates
52.00 MHz.
17. Repeat steps 2 through 9.
NEW SQUELCH Test at 53.00 MHz
18. Change R-442/VRC MC-TUNE-KC switch to 53.00 MHz and BAND to
.
19. Turn AN/URM-103 RF TUNING control for 53.00-MHz meter indication.
20. Adjust AN/URM-103 RF TUNING control for 53.00-MHz display on AN/USM-207. To produce
display, see note under step 1 and readjust RF TUNING control until AN/USM-207 indicates
53.00 MHz.
21. Repeat steps 2 through 9.
NEW SQUELCH Test at 65.00 MHz
22. Change R-442/VRC MC-TUNE-KC switch to 65.00 MHz,
23. Turn AN/URM-103 BAND SWITCH to
) and RF TUNING control for 65.00-MHz meter
indication.
3-11
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