Record Display for the EPA National Library Catalog


Main Title An investigation of broadcast radiation intensities at Mt. Wilson, California /
Author Tell, Richard A. ; O'Brien., Patrick J.
Other Authors
Author Title of a Work
O'Brien, Patrick J.
CORP Author Office of Radiation Programs, Washington, D.C. Environmental Analysis Div.
Publisher U.S. Environmental Protection Agency, Office of Radiation Programs ; Available from the National Technical Information Service,
Year Published 1977
Report Number ORP/EAD-77-2
Stock Number PB-275040
OCLC Number 36647411
Subjects Electromagnetic fields--California--Los Angeles
Additional Subjects Radio field strength ; Radiation hazards ; Measurement ; Radio stations ; Television stations ; California ; Irradiation ; Intensity ; Very high frequencies ; Ultrahigh frequencies ; Mount Wilson ; Los Angeles(California)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA ORP-EAD-77-2 Headquarters Library/Washington,DC 06/11/2018
ELBD ARCHIVE EPA ORP-EAD-77-2 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB-275 040 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation viii, 20 pages : illustrations, map ; 28 cm
The report describes a series of measurements made to determine radio frequency exposure from television and FM broadcast stations located on Mt. Wilson to areas near the tower bases and within about 2,000 feet. Portable broadband survey instruments and a spectrum analyzer with dipole antennas were employed in these measurements and used in a comparison of indicated radiation levels and assess difficulties or peculiarities of the specific types of equipment. Maximum ground level exposure values were in the 1-7 mW/sq cm range. Intensities of about 0.1 mW/sq m were measured inside the Mt. Wilson Post Office which is located in the immediate vicinity of a large number of towers. It was found that wide ranges in exposure could occur over very small geographic areas revealing the potential for significant uncertainties in predictive modeling.
"ORP/EAD-77-2." "April 1977." Includes bibliographical references.