Introduction; Equipment Description - Honeywell BendixKing KT 76C Installation Manual

B
1.1

INTRODUCTION

This manual contains information relative to the physical, mechanical, and electrical characteris-
Honeywell
tics of the
procedures are also included. Information relative to the maintenance, alignment, and procure-
ment of the replacement parts may be found in the KT 76C Maintenance/Overhaul Manual,
P/N 006-15545-00XX (XX = latest revision available).
1.2

EQUIPMENT DESCRIPTION

The KT 76C is a panel mounted, TSO certified Transponder designed to fulfill the role of the air-
borne beacon equipment according to the requirements of the Air Traffic Radar Beacon System
(ATCRBS) that include ATCRBS Mode A, and ATCRBS Mode C.
The KT 76C features a microprocessor controlled gas discharge display. The 4096 identification
code selection is entered with push-button switches. A rotary knob is used for mode selection con-
trol. Additional push-button switches including IDT, VFR, and CLR are provided.
When the KT 76C receives Mode A interrogations from the ground radar facility, it will transmit a
coded group of pulses which consist of a four digit identification number that has been assigned
by the Air Traffic Controller. This code is entered into the KT 76C by the pilot and is transmitted
back to the ground as a Mode "A" reply. This coded information is presented on the ground radar
display at the appropriate range and azimuth. The Air Traffic Controller can then identify each air-
craft that is transponder equipped by its distinct coded number.
The VFR code and display brightness can be programmed from the front panel of the KT 76C and
stored in nonvolatile memory, this programming sequence is described in Section III.
The KT 76C also provides Mode "C" or altitude reporting information. When the KT 76C is oper-
ated in the "ALT" Mode and used in conjunction with an encoding altimeter, the flight level altitude
is displayed in addition to the transponder code, and the altitude information is transmitted to the
ground in response to Mode "C" interrogations.
When the "IDT" button is pressed, the current 4096 code and an additional special ident pulse are
transmitted by the KT 76C, to insure positive identification.
A test mode is also included in the KT 76C to confirm that all segments in the display are opera-
tional.
Rev 3, May 2004
ATCRBS TRANSPONDER
SECTION I
GENERAL
Silver Crown KT 76C ATCRBS Transponder. Installation and operating
IM 006-10545-0003.dwd
KT 76C
Page 1-1