Cessna 172R, Operating Handbook

Page: 355 / 500

CESSNA
MODEL 172R SECTION
9
- SUPPLEMENTS
SUPPLEMENT
1
-
FAA APPROVED
12. COMM FREQUENCY TRANSFER BUTTON ( <— >
) -
Interchanges the
frequencies in
the USE and STANDBY
displays.
To tune
the radio
to
the desired operating frequency,
the desired frequency
must
be entered into the standby
display and then the transfer button
must
be pushed.
This
will
trade
the
contents of
the active and standby
displays. The
operating frequency can also be entered by accessing the
ACTIVE ENTRY
(direct tune) mode which is
done by
pushing
the COMM TRANSFER button for
2
or more seconds. In the
direct
tune mode,
only the active
part of
the display is visible.
The
desired frequency
can be
directly entered into the display.
Push the COMM TRANSFER button
again to
return
to the
active/standby display.
The transceiver is always tuned
to
the frequency appearing in
the
ACTIVE display.
It is, therefore,
possible
to have
two
different
frequencies
stored in the ACTIVE
and
STANDBY
displays and
to
change back and forth between them
at the
simple push of the transfer button.
13. COMM VOLUME
CONTROL (OFF/PULL/TEST)
-
Rotate the
VOL knob clockwise from
the
OFF position. Pull the VOL knob
out
and adjust
for
desired listening level. Push the VOL
knob
back in
to
actuate the automatic squelch. The VOL knob may
also be pulled
out to
hear particularly weak signals.
14-VOR/Localizer Needle or CDI needle.
15.
Glideslope Flag
1 6. TO-FROM-NAV FLAG
17. Azimuth
Card
18.0BS
Knob
19.
Glideslope Needle
Figure 1.
Bendix/King
KX
155A VHF NAV/COMM with Kl 208 or Kl
209A Indicator Head (Sheet
7 of
7)
Dec
2/96
S1-11