T-45A UJPT, E2-C2, ADV, & IUT Eng-21
CNI System
c.
Low altitude warning is generated by
tone generator in the radar altimeter
(RAD ALT) and indicates that aircraft
has descended below the altitude
index (BUG) set on the front cockpit
RADALT
2.
COMM control panel
Sg 2, fr 4
a.
Provides selection of comm amplifier
(normal or alternate)
b.
Provides master volume control for
comm radios, the ICS, and VOR/ILS,
TACAN, and marker beacon audio and
identification signals
COMMUNICATIONS CONTROL PANEL
c.
Allows selection of COMM 1, COMM 2,
VOR, TACAN, or marker beacon audio
(1) Switch Up turns on audio of se-
lected COMM/NAV
(2) Switch Down turns off audio of
selected COMM/NAV
d.
Provides HOT/COLD MIC selection
e.
MIC switch: two-position toggle switch
(1) HOT: permits intercom between
cockpits/ground crew without
depressing microphone switch
(2) COLD: permits intercom between
cockpits/ground crew only when
microphone switch is depressed
f.
ALT-NORM switch: (two-position
toggle switch) during operation,
received COMM 1, COMM 2, VOR and
TACAN audio signals are sent to the
respective pilot headsets by way of
(8-03) Original
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