[ RadSafe ] Non ionizing radiation: VHF repeaters
EMERDF at nv.doe.gov
Wed Jul 3 14:03:49 CDT 2013
It depends on where you're at - in a controlled or uncontrolled environment and the proximity to the RF source. Although exposure limits are based on the field strength of the E and H field guidelines for keeping a safe distance have been established based on frequency, power and antenna gain for controlled and uncontrolled exposures to make compliance easier.
For the US exposure limits see:
A typical VHF ham repeater is usually 50 watts and would use a 3-6 db gain antenna which would be roof mounted (uncontrolled).
It would be unusual for a ham repeater to be of concern with regard to EMF exposure unless you sat next to the antenna.
Dudley Emer KK7IF
National Security Technologies, LLC (NSTec)
National Center for Nuclear Security
Nevada National Security Site, Mercury, Nv
U.S. DOE Contractor
email: emerdf at nv.doe.gov
P.O. Box 98521
M/S NNSS 980
Las Vegas, Nv 89193-8521
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Colette Tremblay
Sent: Wednesday, July 03, 2013 11:11 AM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: [ RadSafe ] Non ionizing radiation: VHF repeaters
Hi, can a VHF repeater (146 MHz, used by an amateur radio club) be of any concern regarding EMF exposure? Thank you.
Radiation Safety Officer
Service de sécurité et de prévention
2325, rue de la Vie-Étudiante, local 1533 Pavillon Ernest-Lemieux - Université Laval Québec (Québec) G1V 0B1
418 656-2131, poste 2893
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