Cessna 172SPHUSR05 Pilot Operating Handbook page 484

SECTION 9 S U P PLEMENTS
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SU PPLEMENT 25 - FAA APPROVED
The Com m portion incorporates an automatic squelch .
override the automatic squelch, the Comm vol ume control knob is
pulled out. Push the knob back i n to reactivate the automatic
squelch . A "T" will be displayed dUri ng transmit and " Rn d u ring
valid signal reception.
The N av portion uses the pull out feature of the N av vol u m e
control t o receive t h e N av s i g n a l I de nt.
knob out to hear the Ident signal plus voice.
attenuate the I dent signal and stil l hear N av voice.
All controls for the Nav/Com m , except those for navigation
course selection, are mounted on the front panel of the receiver­
transm itter. Control lig hting is provided by NAV/COMM interior
lighting and the instrument panel flood l ighting system . For detailed
information of the a udio selector panel used i n conjunction with this
radio refer to the audio selector panel supplement in this section of
the POH (refer to Section 9 index) .
The unit has a stuck m icrophone alert feature. If the
m icrophone i s keyed continuously for greater than
33 seconds, the transmitter stops transmitting and
the active Comm frequency flashes to alert the pilot
of the stuck mic condition .
1 2
1 3
Figure 1 . Bendix/King KX1 65A VH F NAV/COMM ( Sheet 1 of 2)
S25-4
N OTE
1 1
1 0
KX 1 65A VHF NAV/COMM
MODEL 1 72S
Pull t h e volume control
Push the knob in to
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C ESSNA
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Jan 3 1 /02