,
I
SECTION 9 -SUPPLEMENTS ..
SUPPLEMENT 20 -FAA APPROVED
CESSNA
MODEL 172S
.
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"NOTE' '~, ;-'
,
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In this stereo 'installation, 'all headset locations are wired' in
parallel.
If a monaural headset is plugged in at any
location, one intercom. channel will be shorted, Although no
damage to the intercom will result, all stereo headset users
will lose one audio channel.
The monaural headset will
perform normally.
. ,A crystal-controlled superhet~rodyne marker beacon receiver
with 3-light presentatio'n is incorporated within the unit.
Dimming
circuitry
for
the
marker
beacon
lamps' automatically
adjusts
brightness appropriate to the cockpit ambient light level. .
HI
and LO
sensitivity and lamp test/receiver audio mute (T/M) functions are
also provided,
-
.
Light dimming fortre
audio control panel is manually controlled
by th~ RADIO light rheostat knob, .
.
MARKER FACILITIES.
.. MARKER
IDENTIFYING TONE'
, LIGHT"
White
Amber
. Blue
,
'
-
..
Alternate dots and dashes (1300 Hz)
.
'.
'
2.dashes/sec (400
Hzk.
M
"
"When the identifying tone is keyed, the
respective indicating light will blink
accordi~gly.
"
c
Continuous 6 dots/sec (3000 Hz)
Inner,
Airway
&
Fan
Middle
Outer
...
,-:
S20-4
Dec 30/00
Summary of Contents for Cessna 172S Skyhawk SP
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