NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Aircraft measurement of radio frequency noise at 121.5 MHz, 243 MHz and 406 MHzAn airborne survey measurement of terrestrial radio-frequency noise over U.S. metropolitan areas was carried out at 121.5, 243 and 406 MHz with horizontal-polarization monopole antennas. Flights were at 25,000 feet altitude. Radio-noise measurements, expressed in equivalent antenna-noise temperature, indicate a steady-background noise temperature of 572,000 K, at 121.5 MHz, during daylight over New York City. This data is helpful in compiling radio-noise temperature maps; in turn useful for designing satellite-aided, emergency-distress search and rescue communication systems.
Document ID
19770014336
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Taylor, R. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hill, J. S.
(RCA Service Co. Springfield, Va., United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1977
Subject Category
Communications And Radar
Report/Patent Number
X-952-77-11
NASA-TM-X-71283
Report Number: X-952-77-11
Report Number: NASA-TM-X-71283
Meeting Information
Meeting: Symp. and Technical Exhibition on Electromagnetic Compatibility
Location: Montreux
Country: Switzerland
Start Date: June 28, 1977
End Date: June 30, 1977
Accession Number
77N21280
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available