NPFC - MIL-A-14457
ANTENNA AT-640( )/ARN
|Publication Date:||31 December 1957|
This specification covers an airborne marker beacon receiving antenna designed to receive a 75 mc signal and for external mounting on the underside of aircraft fuselage.
Antenna AT-640( )/ARN is intended for use with Radio Receiver R-577( )/ARN-35.