STX 165 Panel Mounted Mode A/C Transponder
Caution: Prior to starting or turning off the aircraft engine,
the avioncs master should be turned off to prevent pos-
sible damage to your avionics.
Note: Mimimum dispay intensity is preset by the pilot in
the user configuration mode.
2
The STX 165 and STX 165R (remote) are Mode A/C Air Traffic Control Beacon System (ATCRBS) transpon-
ders that receive ground radar interrogations on a frequency of 1030 MHz and transmit replys on a frequency
of 1090 MHz. The STX165 is capable of transmitting one of 4,096 pilot entered codes which differ in both the
position and number of pulses that are transmitted. These coded reply’s allow ATC to display your aircraft’s
position, selected identifier, groundspeed and altitude on their radar screens. This information aids controllers
in maintain aircraft separation and proper approach and departure sequencing.
The STX 165R is a remote unit that can be interfaced to and controlled by other manufactures navigations
systems. For operation of the STX165R refer to the manufactures Pilot Guide of the unit controlling the STX
165R This manual will only address the operation of the panel mounted STX 165.
The STX 165 is a panel mounted transponder and uses a bright OLED display that is viewable in virtually all
lighting conditions. The STX 165 detects ambient lighting conditions and automatically dims or brightens
depending on the conditions. The minimum display intensity can be set by the pilot in the user set up mode.
The controls have been arranged to simplify data entry and retrieval while conserving valuable aircraft panel
space.
