Accession Number:

ADA056899

Title:

Radio Propagation via Transponder.

Descriptive Note:

Final rept. 1 Mar 77-31 Mar 78,

Corporate Author:

TEXAS TECH UNIV LUBBOCK DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

• Trost,Thomas F.
• Garrison,Paul E.

Report Date:

1978-05-01

Pagination or Media Count:

57.0

Abstract:

A UHF radio propagation experiment was carried out over the south-western U.S. in July, 1977. Radio signals were relayed between ground stations located up to 500 mi. 800 km. apart by a parachute-borne transponder. The strength of the received signals was found to be in general agreement with calculations utilizing standard atmospheric refraction. The receiving sites for the experiment employed low-noise preamplifiers and custom-made helical beam antennas as well as standard Air Force communications receiving equipment. Author

Descriptors:

• *TRANSPONDERS
• *RADIO RELAY SYSTEMS
• PREAMPLIFIERS
• AIRBORNE
• LONG RANGE(DISTANCE)
• COMMUNICATION AND RADIO SYSTEMS
• LAUNCHERS
• LOW NOISE AMPLIFIERS
• ATMOSPHERIC REFRACTION
• ULTRAHIGH FREQUENCY
• SOUNDING ROCKETS
• HELICAL ANTENNAS
• PARACHUTE DESCENTS

Subject Categories:

• Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE