MIL-HDBK-162A
Volume 1
15 December 1965
Section 1
DATE: 15 December 1964
ITEM NAME: INTERROGATOR SET, RADIO
COGNIZANT SERVICE: USAF
TYPE: AN/GPX-20A
FEDERAL STOCK NUMBER: 5895-349-0039-EG
USA
USN
USAF
USMC
STATUS OR TYPE CLASSIFICATION
Alt Std
Mfg(s) Name or Code Number: Hazeltine Electronics Corp., Crosley Division, AVCO Mfg. Co.
identification feature (SIF) for Radar Set AN/MPS-7.
FUNCTIONAL DESCRIPTION
The AN/GPX-20A uses two interrogators which
alternately transmit coded rf pulses to trigger the
Radio Interrogator Set AN/GPX-20A operates
airborne transponder identification set and concert the
with an airborne transponder identification set on any of
received transponder reply to video pulses.
32 security identity (SI) codes, 400 personnel identity
(PI) codes, or 64 traffic identity (TI) modes. The set
provides identification friend or foe (IFF) and selective
AN/GPX-20A: 1
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