Table of Contents
Advertisement
PILOT'S OPERATING HANDBOOK
SUPPLEMENT
CESSNA 400 ADF
(TYPE R-446A)
1.
PRI (PRIMARY FREQUENCY SELECTOR) - Selects and displays "primary"
frequency.
2.
1-2 - The "1" position activates "primary" (PRI) frequency. The "2" position
activates "secondary" (SEC) frequency.
3.
SEC (SECONDARY FREQUENCY SELECTOR) - Selects and displays "secon-
dary" frequency.
4.
SECONDARY RESELECT LAMP - Lamp will flash only when "secondary"
(SEC) frequency selection is outside of operating range of the receiver and 1-2
switch is in the "2" position.
5.
TEST - Momentary-on switch used only with ADF function to test bearing
reliability. When held depressed, slews indicator pointer; when released, if
bearing is realiable, pointer returns to original position.
6.
BFO - Pushed in: Activates beat frequency oscillator tone to permit coded
identifier of stations transmitting keyed CW signals (Morse Code) to be heard.
7.
REC - Pushed in: Selects receive mode (set operates as a standard communica-
tions receiver using sense antenna only).
NOTE
In this position an automatic pointer stow feature will alert the pilot
to non-ADF operation
by
positioning and retaining the pointer at
the 3:00 o'clock position when the 400 ADF is in the REC function.
8.
ADF - Pushed in: Selects ADF mode (set operates as automatic direction finder
using loop and sense antennas).
9.
PRIMARY RESELECT LAMP - Lamp will flash only when "primary" (PRI)
frequency selection is outside of operating range of the receiver and 1-2 switch is
in the "1" position.
10.
OFF-VOL - Turns set on or off and adjusts receiver volume.
11.
INDEX - Fixed reference line for dial rotation adjustment.
12.
POINTER - WhenHDG control is adjusted, indicates either relative, magnetic, or
true bearings of a radio station.
13.
HDG - Rotates dial to facilitate relative, magnetic, or true bearing information.
Figure
1.
Cessna 400 ADF Operating Controls and Indicator
(Sheet 2 of 2)
3
Hide quick links:
Advertisement
Table of Contents
