Rf Peak Power Output; Atcrbs Reply Rate Capability; Mode S Reply Rate Capability; Unwanted Output Power - Honeywell BENDIX KING KT 73 Installation Manual

Preliminary - Subject To Change Without Notice
BENDIX/KING

RF Peak Power Output:

The transmitter output power will be 125 watts (21.0 dBW) peak power minimum and 500 watts
(27.0 dBW) peak power maximum at the terminals of the transponder antenna. The pulse ampli-
tude variation between any two pulses in an ATCRBS reply will not exceed 1 dB. A Mode S reply
will not contain a pulse amplitude variation, between any two pulses, of greater than 2 dB.

ATCRBS Reply Rate Capability:

The transponder will be able to continuously generate at least 500 ATCRBS 15-pulse replies per
second and will have the capability of a peak reply rate of 1,200 ATCRBS 15-pulse replies for a
duration of 100 ms.

Mode S Reply Rate Capability:

The transponder will have the capability of generating the following reply rates for short Mode S
downlink formats:
A. 50 Mode S replies in a 1 second interval.
B. 18 Mode S replies in a 100 ms interval.
C. 8 Mode S replies in a 25 ms interval.
D. 4 Mode S replies in a 1.6 ms interval.
The transponder will have the capability of generating the following reply rates for long Mode S
downlink formats:
A. At least 16 of the 50 Mode S replies in any 1 second interval.
B. At least 6 of the 18 Mode S replies in a 100 msec interval.
C. At least 4 of the 8 Mode S replies in a 25 msec interval.
D. At least 2 of the 4 Mode S replies in a 1.6 msec interval.

Unwanted Output Power:

The RF output power at 1090 MHz ±3 MHz, at the RF output of the transponder, will not exceed -
50 dBm when the transmitter is in the inactive state. The inactive state is defined to include the
entire period between ATCRBS and/or Mode S transmissions less 10 µsec transition periods, if
necessary, preceding and following the extremes of the transmission.
1.3.4

ANTENNA

Any L-Band blade antenna is suitable for use with the KT 73 provided it is certified to TSO-C74c.
Rev 0, October/2002
NOTE:
A 15-pulse reply includes 2 framing pulses, the 12 in-
formation pulses, and the SPI pulse.
10563I00.JA
KT 73
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