Quantcast Table 3-1. AN/GRC-171 Controls and Indicators (Sheet 2 of 4)

 

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Figure 3-2. Radio Set Control C-7999/GRC-171 Controls and Indicators
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TM-11-5820-815-14 Service and Circuit Diagrams RADIO SET AN/GRC-171 Manual
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Table 3-1. AN/GRC-171 Controls and Indicators (Sheet 3 of 4)


TO 31R2-2GRC171-2
TM 11-5820-815-14
NAVELEX 0967-LP-544-5010
Table 3-1. AN/GRC-171 Controls and Indicators (Sheet 2 of 4)
CONTROL OR
REFERENCE
INDEX
INDICATOR
DESIGNATION
FUNCTION
RADIO RECEIVER-TRANSMITTER RT-980/GRC-171 (Figure 3-1) (Cont)
2
% MOD on % scale.
(Cont)
TEMP on OVER TEMP scale.
+26V and +22V on 30 VOLT scale.
+12V and -12V on 15 VOLT scale.
+5V on 6 VOLT scale.
3
REMOTE/LOCAL
A10A1S3
Toggle switch. Selects remote or local operation.
switch
4
MEGAHERTZ
A10A1S6
8-position thumb-wheel switch. Selects tuned frequency
switch
in 100-MHz steps.
5
MEGAHERTZ
A10A1S7
10-position thumb-wheel switch. Selects tuned
switch
frequency in 10-MHz steps.
6
MEGAHERTZ
A10A1S8
10-position thumb-wheel switch. Selects tuned
switch
frequency in 1-MHz steps.
7
MEGAHERTZ
A10A1S9
10-position thumb-wheel switch. Selects tuned
switch
frequency in 0.1-MHz steps.
8
MEGAHERTZ
A10A1S10
8-position thumb-wheel switch. Selects tuned
switch
frequency in 25-kHz steps.
NOTE
MEGAHERTZ switches S6 through S10 are opera-
tive only when REMOTE/LOCAL switch S3 is in
the LOCAL position.
9
READY
A10A1DS2
Indicator lamp. When lit, indicates tuning complete.
NOTE
READY lamp DS2 is operative only when REMOTE/
LOCAL switch S3 is in the LOCAL position.
10
PTT/CARRIER
A10A1S4
Toggle switch. Selects push-to-talk or continuous
TEST switch
carrier operation.
NOTE
PTT/CARRIER TEST switch S4 is operative
only when REMOTE/LOCAL switch S3 is in
LOCAL position.
3-3


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