Cessna TR182 1979 Pilot Operating Handbook page 310

CESSNA 400 NAV /COM
(TYPE RT-485A)
PILOT'S OPERATING HANDBOOK
SUPPLEMENT
5. VOL Control -- ADJUST to desired audio level.
6. SQ Control -- ROTATE counterclockwise to just eliminate
background noise. Adjustment should be checked periodically to
assure optimum reception.
7. Mike Button:
a. To Transmit -- DEPRESS and SPEAK into microphone.
NOTE
Sidetone may be selected by placing the AUTO selector
switch (on audio control panel) in either the SPEAKER or
PHONE position. Adjustment of sidetone may be accomp-
lished by adjusting the sidetone pot located inside the
audio control panel.
b. XMIT Annunciator Light -- CHECK ON (green light illumi-
nated).
c. To Receive -- RELEASE mike button.
NAVIGATION OPERATION:
NOTE
The pilot should be aware that on many Cessna airplanes
equipped with the windshield mounted glide slope an-
tenna, pilots should avoid use of 2700 ±100 RPM on air-
planes equipped with a two-bladed propeller or 1800 ±100
RPM on airplanes equipped with a three-bladed propeller
during ILS approaches to avoid oscillations of the glide
slope
deviation pointer caused by propeller interference.
1. COM OFF (VOL Control -- TURN ON.
2. SPEAKER/PHONE (or AUTO) Switch (on audio control panel) --
SET to desired mode.
3. NAV Frequency Selection -- SELECT desired operating frequency
by either pressing a NA V MEMORY 1, 2 or 3 pushbutton to recall a
preset frequency, or by using NA V frequency selectors.
4. NAV VOL Control -- ADJUST to desired audio level.
5. ID-VOX-T Switch:
a. To Identify Station -- SET to ID to hear navigation station
identifier signal.
b. To Filter Out Station Identifier Signal-- SET to VOX to include
filter in audio circuit.
6. ARC PUSH-TO/PULL-FROM Knob (If Applicable):
a. To Use As Conventional OBS -- PLACE in center detent and
select desired course.
b. To Obtain Bearing TO VOR Station -- PUSH (ARC/PUSH-TO)
knob to inner (Momentary On) position.
8 1 October 1978