Cessna TR182 1979 Pilot Operating Handbook page 267

PILOT'S OPERATING HANDBOOK
SUPPLEMENT
CESSNA 300 NAV/COM
(RT-385A) WITH CESSNA
400 RNAV (RN-478A)
3. NAVIGATION OPERATING FREQUENCY READOUT.
4. ID-VOX-T SWITCH - With VOR or LOC station selected, in ID position, station
identifier signal is audible; in center VOX (Voice) position, identifier signal is
suppressed; in T (Momentary On) position, the VOR navigational self-test
function is selected.
5. NAVIGATIONAL RECEIVER FRACTIONAL MEGAHERTZ FREQUENCY
SELECTOR - Selects NA V frequency in .05 MHz steps between .00 and .95 MHz:
simultaneously selects paired glide slope frequency and DME channel.
6. NAV VOLUME CONTROL (VOL) - Adjusts volume of navigation receiver audio.
Clockwise rotation increases audio level.
7. NAVIGATION RECEIVER MEGAHERTZ FREQUENCY SELECTOR - Selects
NAV frequency in l-MHz steps between 108 and 117 MHz; simultaneously selects
paired glide slope frequency and DME channel.
8. COMMUNICATION RECEIVER-TRANSMITTER FRACTIONAL MHz FRE-
QUENCY SELECTOR - Depending on position of the 5-0 Switch, selects COM
frequency in .05MHz steps between .000and .975MHz. The 5-0 switch identifies the
last digit as either 5 or O.
9. SQUELCH CONTROL - Used to adjust signal threshold necessary to activate
COM receiver audio. Clockwise rotation increases background noise (decreases
squelch action); counterclockwise rotation decreases background noise.
iO.
COMMUNICATION RECEIVER-TRANSMITTER MHz FREQUENCY
SELECTOR - Selects COM frequency in 1 MHz steps between 118 and 135 MHz.
11. COM OFF-VOL CONTROL - Combination on/off switch and volume control;
turns on NA V/ COM Set and RNA V Computer circuits: controls volume of
communication receiver audio.
12. COURSE CARD - Indicates selected VOR course under course index.
13. BACK COURSE LAMP (BC) - Amber light illuminates when an autopilot with
reverse sense feature is installed and the reverse sense switch or the autopilot's
back-course function is engaged and receiver is tuned to a localizer frequency:
indicates course deviation pointer is reversed.
14. AREA NAV LAMP (RN) - When green light is illuminated, indicates that RNAV
operation is selected.
15. OMNI BEARING SELECTOR (OBS) - Rotates course card (12) to select desired
bearing to or from a VOR station or to a selected RNA V waypoint.
16. COURSE INDEX - Indicates selected VOR or RNAV course (bearing).
17. COURSE DEVIATION POINTER - Indicates deviation from selected VOR or
RNA V course or localizer centerline.
Figure 1. Cessna 300 Nav/Com Set, Operating Controls and Indicators
(Sheet 2 of 3)
1 October 1978 3