RF Exposure Audits. EDDIE BULL Baldock Operations Manager Fixed and Mobile Monitoring and Measurements Section Radiocommunications Agency. The Stewart Report:
Fixed and Mobile Monitoring and Measurements Section
We recommend that an independent, random, ongoing audit of all base stations be carried out to ensure that exposure guidelines are not exceeded outside the marked exclusion zone and that base stations comply with their agreed specifications. If base station emissions are found to exceed the guideline levels, or there is significant departure from the stated characteristics, then the base station should be decommissioned until compliance is demonstrated. We recommend that particular attention should be paid initially to the auditing of base stations near schools and other sensitive sites.
RF Audit progress in 2002 on Cellular Radio base station activity on or near Schools and Hospitals.
RF exposure comes from many sources, not just from cellular systems. In fairness to the cellular operators the Agency decided to carry out a number of RF Audits across the radio spectrum covering the band 30MHz to 2GHz and post the results on the RF Audit Web site.
The following spectrum plot examples show RF activity in the two sub-bands 30 - 860MHz and 860MHz - 2GHz.
Extracted from Report ML2-016-02
Summary of example plots The total Exposure Quotient for the whole band RF emissions (30MHz – 2GHz) is 3.51e-3.The Exposure Quotient for the sub-band 30 - 860MHz is 3.46e - 3. (1/289th of the ICNIP guidance level) The Exposure Quotient for the sub-band 860MHz - 2GHz is 4.95e - 5. (1/20202th of the ICNIP guidance level)
Although these measurements are site specific and represent only a snapshot of the RF activity at the time of the survey, the ratio of cellular activity to other types of emissions appear to be typical at most of the locations surveyed.At the example location the dominant emissions were Analogue TV and T-DAB signals At most of the other survey locations Band 2 broadcast, T-DAB and TV emissions yielded the highest levels.