 |
||||||||||||
|
Radio
Broadcast Technical Consulting and Sales |
|||||||||||
|
|
||||||||||||
|
Working in the field RF Radiation Measurements |
||||||||||||
|
RF (radio frequency) radiation can be a hazard
around radio stations. OSHA rules specify maximum allowed radiation
limits for people in high RF fields. The amount allowed for
uncontrolled/general public is one-fifth that of controlled/occupational
exposure. We carry a Narda Broadband Isotropic Radiation Monitor, which is good from 0.3 MHz to 1.5 GHz. The measurements are performed to judge compliance with Sections 1.1306 and 1.1307 of the FCC rules using OST Bulletin No. 65. We do the measurements when calculations show there could be a problem. FCC rules require the measurements if the fencing around a "hot" tower is closer than the standard distance. That calculated distance is 10 feet for 1 KW and 17 feet for 5 KW of AM radiated power. |
|
The meter clearly shows when
and where the limit is exceeded. Normally fences are erected and signs
posted indicating danger zones. Sometimes guy anchor points can be "hot" with RF especially on towers with FM transmit antennas. Actual on-site measurements tell the story. |
|
Remedies can include the use of grounded
RF screen where an AM tower might be very close to a transmitter or studio
building.
Upon request, we will issue a report which is FCC acceptable in support of an application for license or renewal of a license. The work is done on a time and material basis. See our rate card. |
|
Questions?
|
page last edited 04/09/2010
