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CESSNA 400 NAV/COM
(RT-485A) WITH CESSNA
400 RNAV (RN-478A)
PILOT'S OPERATING HANDBOOK
SUPPLEMENT
COMMUNICATION RECEIVER-TRANSMITTER OPERATION:
1.
COM OFF/VOL Control -- TURN ON.
2.
XMTR SEL Switch -- SET to desired 400 Nav/Com (on audio
control panel).
3.
SPEAKER/PHONE (or AUTO) Switch -- SET to desired mode (on
audio control panel).
4.
COM Frequency Selection -- SELECT desired operating frequency
by either pressing a COM MEMORY 1, 2 or 3 pushbutton to recall a
preset frequency, or by manually selecting the desired operating
frequency using the COM frequency selectors and C pushbutton.
5.
VOL Control -- ADJUST to desired
audio
level.
6.
SQ Control - - ROT A TE counterclockwise to decrease background
noise as required.
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:
8
1.
COM OFF /VOL Control -- TURN ON; adjust to desired audio level.
2.
SPEAKER/PHONE
(or
AUTO) Switch -- SET to desired mode (on
audio control panel).
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 NAV 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.
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