TM 11-5895-1141-12
SECTION II EQUIPMENT DESCRIPTION AND DATA
1-6.
EQUIPMENT CHARACTERISTICS, CAPABILITIES AND
FEATURES
a. The C-10931(P)/FRC is used for remote operation of radio transmitters and receivers in air traffic control of one
b. The C-10931(P)/FRC contains three main assemblies, an audio unit assembly which contains the transmitting
and receiving amplifiers and gain adjustments, a selector unit assembly which contains the channel selection and
switching circuits, and a headset/microphone jack panel assembly having connectors through which the operator's
headset, microphones, and transmitter keying switches are connected to the equipment.
1-7.
EQUIPMENT DATA
a.
Audio Unit and Selector Unit Assemblies
Input voltage
24 +2 vdc
Input current (8 channels
5 amps
simultaneously keyed)
8% 300-3000 Hz
channel, either direction)
Hum distortion
30 dB below normal signal
Channel crosstalk/isolation
-40 dBm except speaker
(maximum 8 channels selected)
55 dB below a 2-watt speaker output
level
Regulator attack time
10 milliseconds, maximum, for
stabilization to within 1.5 dB of final
value following increase of input level from
11 to +9 dBm.
Sidetone level
-25 dBm +2 dB
600 +100 ohms
Output level (send)
Self-regulated to 0 dBm,nominal, for
input levels from -11 to +9 dBm.
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