Cessna 172R, Operating Handbook

Page: 351 / 500

CESSNA
MODEL 172R SECTION
9
-
SUPPLEMENTS
SUPPLEMENT 1
-
FAA APPROVED
1. OPERATING COMM FREQUENCY DISPLAY
-
Displays
COMM
ACTIVE and COMM STANDBY frequencies with
a "T"
between them
to
indicate TRANSMIT and an "R"
to
indicate
RECEIVE modes of operation.
2. OPERATING NAV FREQUENCY DISPLAY
-
The
right
portion
of the display is
allocated
to
NAV
receiver ACTIVE and
STANDBY information. The
frequency channeling is similar to
the COMM when operating
in
the frequency mode. The NAV
ACTIVE and STANDBY frequencies are stored in the memory
on power down and
return
on power up.
3.
NAV STANDBY/OBS/Bearing/Radial/Timer Display
-
The right
side
of the
NAV
display is controlled by the MODE
SELECTOR BUTTON
(see #7 below).
With an active
VOR
frequency, this portion
of
the display shows the STANDBY
frequency, OBS setting for the internal CDI, the bearing
to
the
VOR
station, radial from the VOR station, or a count-up/count¬
down
timer.
With an active localizer frequency, this portion of
the display shows the standby
frequency, the letters
"LOC", or
count-up/count-down timer.
4.
NAV
FREQUENCY SELECTOR KNOB (SMALL)
-
Operates
in 50 kHz
steps.
The NAV receiver’s lower and upper
frequency
limits are 108.00 MHz and 117.95 MHz. Exceeding
the upper limit
of frequency
band will
automatically
return to
the
lower
limit and vice versa. A clockwise rotation will
increase (inc) the previous frequency while a
counterclockwise
rotation will decrease (dec) the previous frequency.
5. NAV FREQUENCY SELECTOR KNOB (LARGE)
-
Operates
in
1
MHz steps. The frequency inc/dec operates the
STANDBY frequency display. A clockwise rotation
will
increase the previous frequency while a counterclockwise
rotation will decrease the previous frequency. Exceeding the
upper limit
of the frequency band will automatically
return to
the lower limit and vice versa.
Figure
1. Bendix/King
KX 155A VHF NAV/COMM with Kl 208 or Kl
209A Indicator Head (Sheet
3 of 7)
Dec
2/96 S1-7