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on the right side of the aft cockpit deck. The forward
crew station has two foot-operated switches: a radio
transmit switch on the left side of the deck, and an interphone
transmit switch on the right side. Hands free
intercommunication is provided by a hot mike feature.
The remote transmitter switch pushbutton on the pilot
cyclic stick grip, directly below the RADIO/ICS switch,
allows the pilot to remotely select the radio transmitter
that he wishes to use. With the transmitter selector
switch in position 5 (C-10414 configuration) or position
RMT (C-11746 configuration), pressing the remote
transmit select switch begins the transmitter select
cycle. Identification of the selected transmitter is displayed
by way of lamps above the pilot CSC panel. A
placard is provided for each crewmember as ready reference
to which receiver and transmitter selector
switch position will enable a desired radio. Power for
the (ICS) is provided from the emergency dc bus
through the ICS circuit breaker in each crew station.
3.5.1 Controls and Functions. The function of the
controls on the face of each CSC panel (fig 3-2 or 3-3)
are as shown in table 3-2.
NOTE
l The RADIO MON switches are connected
(ON) when pushed in fully and
disconnected (OFF) when pulled out.
l The C-10414(V)3/ARC control panel is
not illuminated.
EFFECTIVE ON AIRCRAFT SERIAL NUMBER
83-23787 THRU 85-25415 M01-028-1
Figure 3-2. Control Panel C-10414(V)3/ARC
and Remote Transmitter Selector
EFFECTIVE ON AIRCRAFT SERIAL NUMBER M01-028-2B
85-25416 AND SUBSEQUENT
Figure 3-3. Control Panel C-11746(V)4/ARC
and Remote Transmitter Indicator Panel
ID-2403/ARC
Change 4 3-7
TM 1-1520-238-10
Table 3-2. CSC Panel Control and Indicator Functions
Control/Indicator Function
Receiver Selector
Switches ON
1
2
3
4
5
NAV A
NAV B
Transmitter
Selector Switch
PVT
ICS
1
2
3
4
5(C-11746)
5(C-10414)
RMT (C-11746)
ICS Switch
HOT MIC
VOX ON
NORM
ICS OFF
VOL Control
Connects pilot ARC-186 receiver to the headphone.
Connects pilot ARC-164 to the headphone.
Connects CPG ARC-186 receiver to the headphone.
Spare.
Spare.
Connects the ARN-89 or the ARN-149 ADF receiver and the APX-100 IFF portion of the
transponder to the headphone.
Connects the audio output of the video recorder subsystem (VRS) to headphone
(playback mode of the VRS ONLY).
Not Used.
Enables ICS system when keyed.
Enables pilot ARC-186 transmission when keyed.
Enables pilot ARC-164 transmission when keyed.
Enables CPG ARC-186 transmission when keyed.
Spare.
Spare.
Enables remote transmit select switch (pilot only).
Interphone transmit on at all times.
Enables VOX.
Interphone transmit functions only when interphone transmit switch pressed.
Disables interphone transmit.
Adjusts headset volume level.
3-8
TM 1-1520-238-10
Table 3-2. CSC Panel Control and Indicator Functions - continued
Control/Indicator Function
MIC Switch
1 Used when all maintenance headsets have dynamic microphones. (Pilot and CPG
IHADSS helmets have linear microphones).
2 Used to communicate between pilot and CPG with IHADSS helmets; and between
pilot/CPG with IHADSS helmets and maintenance personnel at wing stations. In the
latter case, maintenance headsets must have a linear microphone or a compensating
adapter.
NOTE
If the pilot communication control panel MIC switch is in the 2 position, headsets connected to the
right wing station ICS connector must also have a linear microphone or compensating adapter. If
the CPG communication control panel MIC switch in the 2 position, headsets connected to the left
wing station ICS connector must also be configured correctly.
3.5.2 Modes of Operation. There are several meth- 2. RADIO/ICS rocker switches- Press the cyclic
ods of intercommunication operation. In all cases, no stick grip RADIO rocker switch or the radio
operator action is required to receive intercom signals transmit floor switch. Speak into microphone
other than adjusting the VOL control for a comfortable while pressing switch. Release to listen.
level at the headset.
3.5.5 Receiver Selection. Place RADIO MON
3.5.3 Intercommunication for Crewmem- switch(s) to ON as desired and adjust volume to a combers.
Transmitting and receiving is accomplished by fortable listening level.
both crewmembers in the following manner:
1.
2.
Transmitter selector switch is set to ICS when
the pilot is using the ICS floor switch. The
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