Extra 300LX, Maintenance Manual

Page: 284 / 515

CHAPTER 34
PAGE 10 PAGE DATE: 1. March 2011
MAINTENANCE MANUAL EXTRA 330LX
34-50-00 DEPENDENT POSITION DETERMINING
34-50-01 Transponder
Various transponders can be installed in the EXTRA 330LX.
A transponder is a radio transmitter and receiver that fulfills
the role of the airborne beacon equipment according to the
requirements of the Air Traffic Radar Beacon System
(ATCRBS). It operates on radar frequencies, receiving ground
radar interrogations at 1030 MHz and transmitting a coded
response of pulses to ground-based radar on a frequency of
1090 MHz.
Removal/Installation
1 Remove instrument cover if transponder has to be installed
from the rear. Refer to chapter 31-10-03.
2 Remove transponder following the Removal/Installation
Instructions of the respective manufacturer.
3 Install in reverse sequence of removal.
4 Perform an operation test.
34-50-02 Blind Encoder ACK A-30
When a blind encoder is used it is installed under the left
upper longeron just in front of the rear instrument panel. A
mounting tray is attached to the steel tube frame by two bolts.
The digitizer (1, figure 2) is slid into the mounting tray and
then fixed by a knurled screw (6). The knurled screw is
secured by a wire. The static port of the digitizer is con-
nected to the aircraft static system by a hose (5) ending at a
T-fitting (4). The electrical wiring (2) is connected via a plug
(3).