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 SB 740-91-01
StepSetting and InstructionsNormal Indication
2(9) Slowly reduce input to 0.55 pV.(Call lamp remains
(cont.)Squelch shall remain broken. lighted.)
(10) Repeat test for frequency 64.05 MHz by
adjusting AN/USM-207 controls.
(11) Adjust AN/URM-103 as follows:
(a) Band Switch. D
(b) RF Tuning. 64.05 MHz
(12) Adjust R-442
(a) MC-TUNE-KC. 64.05 MHz
(b) Band. B
(c) Slowly advance AN/URM-103 LO RF iVRF Attenuator lVcon-
control until Call indicator lights.trol setting should
Note setting of control.be 0.7 -pV or less.
(d) Slowly reduce input to 0.55 lV.(Call lamp remains
Squelch shall remain unbroken lighted.)
(b)Tone (new) operated squelch.
(1) Connect equipment as shown in fig-
ure B-7
(2) On AN/USM-207, set the controls as
follows:
(a) Display Control. Set for desired
time.
(b) Sensitivity.100 V
(c) Gate Time . (sec):106IO
(d) Function.FreqI
(3) On AN/URM-103, set controls as follows:
(a) Band Switch. C
(b) RF Tuning. 41.05 MHz
(c) Deviation Range. 10 kHz
(d) Function. 150 Hz
(e) Deviation Adjust. For 3 kHz on
kilocycles Deviation Meter
(f) LO RF Set to Line. Right-hand
meter to red line
(g) RF Output. LO
(4) On Receiver R-442, set controls as follows:
(a) Band. A
(b) Light. On
(c) MC-TUNE-KC. 41.05 MHz
(d) Squelch.Old on
(e) Volume.Fully counterclockwise
(f) Power. On Reset
(5) Press Reset switch on AN/USM-207.
(6) Adjust AN/URM-103 RF tuning control
for 41.05 MHz indication on the AN/
USM-207.
B-47
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