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PILOT'S OPERATING HANDBOOK
SUPPLEMENT
IN-442AR STANDARD CDI
WITHOUT
AUTOMATIC RADIAL CENTERING
CESSNA 400 NA V /COM
(RT-485A) WITH CESSNA
400 RNAV (RN-478A)
IN-1048AC OPTIONAL CDI
WITH
AUTOMATIC RADIAL CENTERING
1.
COMMMEMORY1,
2&3PUSHBUTTONS - When
a
COMMEMORYpushbutton
i
s pressed,
the
preset selected frequency will appear in the COM
frequency
window
for use
as
the
selected
operating
frequency. Each
pushbutton will
illuminate
white when
pressed
and
the light
will
go
out
on
the
previously selected
pushbutton. Three preset frequencies
may
be
stored in
MEMORY
and
selected
a
s
desired, by merely pressing the
a
ppropriate COM
ME
MORY pushbutton to recall
the
desired
operating
frequency.
If
electrical
power
to
the
set's
" keep-alive"
circuit
has not been interrupted, upon turn-on, the set will automatically
recall
the last COM MEMORY frequency selected by the
MEM
ORY
pushbutton.
If
electrical
power is removed from the
set's
"
keep-alive"
circuit (such as
radio
.
~
removal
or battery
replacement) for
more than 15 seconds, upon turn-on, the COM
MEMORY
circuits will
have to be reset
and
COM 1 MEMORY will
automatically
be selected with the lowest operating frequency
(118.000
MHz)
selected.
Figure
1.
Cessna 400 Nav/Com Set, Operating Controls and Indicators
(Sheet 1 of 4)
3
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