Public exposure to RF from installed sources: Site measurements and Personal Exposimetry

The aim of present study is to measure the RF exposure at the location accessible to public with site measurements and the exposure to RF with personal dosimeter. The site measurements were spot measurements (n=292 sites) with spectrum analyzer and broadband RF antenna in three axis and the resultant was calculated according to the sum of E-field strength vector components. The area and type of the measurement sites were also classified. In the other part of the study the applicability of the RF Dosimeter (RF Personal ExposiMeter - PEM) for human exposure assessment in the real urban environment was investigated. The RF exposure levels, at the living area of general public were collected and evaluated according to the EU Recommendation (1999/519/EC) and ICNIRP reference levels [1,2]. At the present state of data collection and evaluation, the median value of exposure in GSM band was 0.025 mikrowatt/cm 2 at outdoor, 0.013 mikrowatt/cm 2 at indoor sites respectively. Within 300 m of the base station no clear expression could be found between the exposure levels and distances similarly to other recent studies. The results from personal exposure showed that one third of the participants spent 40-70 % percent of 24h recording time above the detection limits (0.05 V/m) and half of subjects spent less than 10 %. The highest exposure was detected during the travelling period and the lowest in the bed at home.