15 December 1965
DATE: 1 July 1964
ITEM NAME: RADAR EQUIPMENT
COGNIZANT SERVICE: USN
FEDERAL STOCK NUMBER:
STATUS OR TYPE CLASSIFICATION
Mfg(s) Name or Code Number: Hazeltine Electronics Corp.
RELATION TO SIMILAR EQUIPMENT
Some major units of AN/APX-1, AN/APX-1X,
automatically identify the craft in which it is installed by
and AN/APX-2 are identical and interchangeable.
response to received coded impulses.
frequency characteristic permits it to receive
interrogations and transmit replies to a number of
interrogators, on different frequencies, over a wide
band. It can reply by predetermined coded pulses or
A-band - 157 to 187 mc
distress signal, or with modification to act as a sound
G-band - 194 to 212 mc
guide to "home" other craft. It can share time between
R-band - 172 to 182 mc (modification required)
two band ranges, one as interrogation reply and the
other for special fighter director purposes. It is used in
conjunction with MK III IFF basic element I-Interrogator
does not exceed 1/7 of the sweep time
and basic element III-Responder, or with other basic
Frequency Drift: A-band - 1.0 mc
element II-Transponder equipment.
G- or R-band - 0.5 mc