Accession Number : AD0711255

Title :   EVALUATION OF TACAN CW INTERFERENCE MODIFICATION.

Descriptive Note : Final rept. Mar 68-Aug 70,

Corporate Author : NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY NJ

Personal Author(s) : Hartranft, G. J. ; Postel, H.

Report Date : SEP 1970

Pagination or Media Count : 45

Abstract : The report presents the results of laboratory and field tests of a NAFEC-developed modification designed to alleviate the CW interference problems that have been suspected of causing outages of GRN-9 and RTB-2 TACAN (transponder) ground systems. Previous investigation concluded that the level of spurious RF CW, radiated by certain airborne interrogators tested, was of sufficient magnitude to cause transfer or shutdown of TACAN equipment used for air navigation when located near taxiways and/or runways of airports. The modification was field-evaluated at four commissioned facility sites and was found successful in preventing equipment transfers or shutdowns of TACAN at ground facilities caused by CW interference. (Author)

Descriptors :   *RADIO NAVIGATION, RADIOFREQUENCY INTERFERENCE, AIRPORTS, RADIO EQUIPMENT, TRANSPONDERS, MODIFICATION KITS.

Subject Categories : Navigation and Guidance
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE