18
CESSNA 400 MARKER BEACON PILOT'S OPERATING HANDBOOK
(TYPE R-402A)
SUPPLEMENT
NOTE
Due to the short distance typical between the middle
marker and inner marker, audio identification of the inner
marker may not be possible if muting is activated over the
middle marker.
MARKER BEACON OPERATING PROCEDURES FOR USE WITH
AUDIO CONTROL PANELS PROVIDED WITH THREE TRANSMIT-
TERS. (REF. FIG. 2)
1.
OFF/VOL Control -- TURN to VOL position and adjust to desired
listening level. Clockwise rotation increases audio level.
2.
HI/LO Sen Switch -- SELECT HI position for airway flying or LO
position for ILS approaches.
3.
SPKR/PHN Switch -- SELECT speaker or phone audio.
4.
BRT Control -- SELECT BRT (full clockwise). ADJUST as desired
when illuminated over marker beacon.
5.
TEST Switch -- PRESS to TEST position and verify that all marker
beacon annunciator lights will illuminate full bright to indicate
lights are operational.
SECTION 5
PERFORMANCE
There is no change to the airplane performance when this avionic
equipment is installed. However, the installation of an externally mounted
antenna or several related external antennas, will result in a minor
reduction in cruise performance.
6
1 July 1979
19
PILOT'S OPERATING HANDBOOK
CESSNA 400 TRANSPONDER
SUPPLEMENT
AND ALTITUDE ENCODER (BLIND)
SUPPLEMENT
CESSNA 400 TRANSPONDER
(Type RT-459A)
AND
OPTIONAL ALTITUDE ENCODER (BLIND)
SECTION 1
GENERAL
The Cessna 400 Transponder (Type RT-459A), shown in Figure 1, is the
airborne component of an Air Traffic Control Radar Beacon System
(ATCRBS). The transponder enables the ATC ground controller to "see
"
and identify the aircraft, while in flight, on the control center's radarscope
more readily.
The Cessna 400 Transponder system consists of a panel-mounted unit
and an externally mounted antenna. The transponder receives interrogat-
ing pulse signals on 1030 MHz and transmits pulse-train reply signals on
1090 MHz. The transponder is capable of replying to Mode A (aircraft
identification) and also to Mode C (altitude reporting) when coupled to an
optional altitude encoder system. The transponder is capable of replying
on both modes of interrogation on a selective reply basis on any of 4,096
information code selections. The optional altitude encoder system (not
part of a standard 400 Transponder system) required for Mode C (altitude
reporting) operation, consists of a completely independent remote-
mounted digitizer that is connected to the static system and supplies
encoded altitude information to the transponder. When the altitude encoder
system is coupled to the 400 Transponder system, altitude reporting
capabilities are available in 100-foot increments between -1000 feet and the
airplane
'
s maximum service ceiling.
All Cessna 400 Transponder operating controls are located on the front
panel of the unit. Functions of the operating controls are described in
Figure 1.
1 July 1979
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