Contents
What is the basic measurement of RF limits?
Cellular Telephone Specific Absorption Rate (SAR) The SAR is a value that corresponds to the relative amount of RF energy absorbed in the head of a user of a wireless handset. The FCC limit for public exposure from cellular telephones is an SAR level of 1.6 watts per kilogram (1.6 W/kg).
What is maximum effective transmitted or radiated power DB of the cellular tower permitted by FCC recommendation?
Although the FCC permits an effective radiated power (ERP) of up to 500 watts per channel (depending on the tower height), the majority of cellular or PCS cell sites in urban and suburban areas operate at an ERP of 100 watts per channel or less.
What is a safe RF level?
The safe limit for a mobile phone user is an SAR of 1.6 watts per kg (1.6 W/kg), averaged over one gram of tissue, and compliance with this limit must be demonstrated before FCC approval is granted for marketing of a phone in the United States.
What is the basis of determining the levels of RF exposure?
The quantity used to measure how much RF EMR is actually absorbed by the body is called the Specific Absorption Rate or SAR. The SAR is usually expressed in units of watts per kilogram (W/kg) or milliwatts per gram (mW/g).
How bad is RF exposure?
It has been known for many years that exposure to very high levels of RF radiation can be harmful due to the ability of RF energy to heat biological tissue rapidly. Exposure to very high RF intensities can result in heating of biological tissue and an increase in body temperature.
What is the FCC limit for RF exposure?
Cellular Telephone Specific Absorption Rate (SAR) The SAR is a value that corresponds to the relative amount of RF energy absorbed in the head of a user of a wireless handset. The FCC limit for public exposure from cellular telephones is an SAR level of 1.6 watts per kilogram (1.6 W/kg).
What does the FCC need to do about RF?
In the Inquiry the FCC requests comment to determine whether its RF exposure limits and policies need to be reassessed.
Is the Federal Communications Commission responsible for radio frequency safety?
Because of its regulatory responsibilities in this area the Federal Communications Commission (FCC) often receives inquiries concerning the potential safety hazards of human exposure to radio-frequency (RF) energy. The information on this page provides answers and information to inquiries regarding RF Safety.
What are the frequency allocations for 137.8 kHz?
Table of Frequency Allocations 137.8-1800 kHz (LF/MF) Page 3 International Table United States Table FCC Rule Part(s) Region 1 Table Region 2 Table Region 3 Table Federal Table Non-Federal Table 137.8-148.5 FIXED MARITIME MOBILE 5.64 5.67 137.8-160 FIXED. MARITIME MOBILE.