15 December 1965
DATE: 15 December 1964
ITEM NAME: INTERROGATOR SET, RADIO
COGNIZANT SERVICE: USAF
FEDERAL STOCK NUMBER: 5895-349-0039-EG
STATUS OR TYPE CLASSIFICATION
Mfg(s) Name or Code Number: Hazeltine Electronics Corp., Crosley Division, AVCO Mfg. Co.
identification feature (SIF) for Radar Set AN/MPS-7.
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