Cessna 1980 182Q Pilot's Operating Handbook And Flight Manual page 278

18
CESSNA 300 NAV/COM
(RT-385A) WITH CESSNA
400 RNA V (RN-478A)
PILOT'S OPERATING HANDBOOK
SUPPLEMENT
SECTION 4
NORMAL PROCEDURES
COMMUNICATIONS OPERATION:
1.
COM OFF /VOL Control-- TURN ON; adjust to desired audio level.
2. XMTR SEL Switch (on audio control panel)-- SET to desired 300
NAV/COM.
3. SPEAKER PHONE Selector Switches (on audio control panel) --
SET to desired mode.
4. 5-0 Fractional MHz Selector Switch -- SELECT desired operating
frequency (does not affect navigation frequencies).
5. COM Frequency Selector Knobs -- SELECT desired operating
frequency.
6. SQ Control -- ROTATE counterclockwise to just eliminate back-
ground noise.
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. or may be eliminated by placing the
AUTO selector switch in the OFF position. Adjustment of
sidetone on audio control panels supplied with three
transmitters cannot be accomplished externally. How-
ever. audio control panels supplied with one or two trans-
mitters have sidetone adjustment pots that are accessible
through the front of the audio control panel with a small
screwdri ver.
b. To Receive -- RELEASE mike button.
NAVIGATION
6
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 October 1979