Frequency Select Knobs; On/Off/Volume Control Switch; Set/Reset Elapsed Timer Button; Frequency Transfer Button (Frq) - Cessna 172R Operating Handbook

SECTION 9 SUPPLEMENTS
-
SUPPLEMENT 6 - FAA APPROVED
5- FLIGHT TIMER AND ELAPSED
the elapsed time (ET) or flight time (FLT) mode is annunciated here.
6. FREQUENCY
FRQ is displayed and directly selects the active
either of the time functions is selected. The
may be rotated either clockwise or counterclockwise. The
pulled out to tune
The outer knob tunes the 100's with rollover into the 1000's up to 1799.
These knobs are also used
is
timer used in the countdown
7. ON/OFF/VOLUME CONTROL SWITCH (ON/OFF/VOL)
primary power and audio
position applies primary power to the receiver; further clockwise
rotation increases audio level. Audio muting
be muted unless the receiver is locked on a valid station.
SET/RESET ELAPSED TIMER BUTTON (SET/RST)
8.
button when
displayed or not.
FLIGHT TIMER/ELAPSED TIMER
9.
-
(FLT/ET)
pressed alternatively selects either Right Timer mode
mode.
10. FREQUENCY
when pressed exchanges the
frequency
standby.
11. BFO (Beat Frequency Oscillator) BUTTON
the BFO mode when in the
3).
12. ADF BUTTON - The
ADF mode. The ANT mode is selected with the ADF button in the
position.
depressed
.
Figure KR 87 Automatic Direction Finder (ADF) (Sheet 3 of
1
S6-6
SELECT KNOBS
the 1's. The small knob is pushed in to tune the 10's.
output
pressed resets the elapsed timer whether it
The Right Timer/Elapsed Time mode selector button when
TRANSFER BUTTON
becomes active and the former
ADF button selects
The ADF
mode is selected with the ADF button in the
position.
TIMER MODE ANNUNCIATION
-
Selects the standby frequency when
frequency
the desired time when the
to set
mode.
level. Clockwise rotation from OFF
causes
MODE SELECTOR
-
The FRQ transfer button
(FRQ)
active and standby
active frequency goes
-
depressed position. (See note under item
either the ANT
CESSNA
MODEL 172R
-
whenever
frequency
selector knobs
small knob
elapsed
-
Controls
the audio
output to
-
The set/reset
is being
BUTTON
or
Elapsed
The new
frequencies.
The BFO button selects
mode or the
Dec 2/96
Either
is
Timer
into
out
4