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Page Title:
Receiver and Interphone Monitoring. |
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|  TM
11-5831-201-20
may each be monitored by operating the RE-
tion. Operate the transmit-interphone talk switch
CEIVERS NAV switch to ON. These receivers
to the transmit position and speak into the micro-
cannot be monitored separately through the RE-
phone.
CEIVERS 1, 2, 3, 4, switches of the control set.
(2) Crew station talk switch.
(2) Monitor communications radio receiver
(a) Operate the transmit-interphone se-
1, 2, 3, or 4 individually or simultaneously by
lector switch on the control set to INT.
operating the RECEIVERS 1, 2, 3, or 4 switches
(b) Depress the crew station talk switch
to ON.
and speak into the microphone. Hold the switch
(3) Monitor the interphone line only, by op-
closed while speaking.
erating the RECEIVERS INT switch to the ON
(3) Hot mike switch (external control).
p o s i t i o n . The interphone may be monitored
(a) Operate the RECEIVERS INT switch
simultaneously with any or all of the radio re-
on the control unit to ON.
ceivers if desired.
(b) Operate the hot mike switch to ON
(4) The emergency receiver input is moni-
and speak into the microphone. Turn off the hot
tored independently of all control switches in the
mikes switch before attempting to use a radio
control set.
transmitter. No transmission over the radio trans-
e. Private Interphone. Operate the transmit-
mitters is possible when the hot mike switch is
interphone selector switch to PVT and speak into
turned on.
the microphone to communicate with the other
NOTE
station connected to the interphone line.
When an interphone station contains
NOTE
both a crew station talk switch and a
In some aircraft, it may be necessary to
hot mike switch, either switch may be
operate a push-to-talk switch before
used to communicate over the inter-
speaking into the microphone.
phone system.
f. Stopping. The equipment may be turned off
d. Receiver and Interphone Monitoring.
by shutting down the power system of the air-
(1) The low frequency navigation, the
craft, interphone, navigation, and communica-
marker beacon, and the vhf navigation receivers
tion systems.
2-3
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