- Tytuł:
- Simultaneous Occupational Exposure to FM and UHF Transmitters
- Autorzy:
-
Valic, B.
Kos, B.
Gajsek, P. - Powiązania:
- https://bibliotekanauki.pl/articles/90025.pdf
- Data publikacji:
- 2012
- Wydawca:
- Centralny Instytut Ochrony Pracy
- Tematy:
-
occupational exposure
simultaneous exposure
measurements
numerical calculation
SAR
FM
UHF
FDTD - Opis:
- Occupational exposure caused by large broadcasting transmitters exceeds current reference levels. As it is common for different radio and TV transmitters to share the location, we analysed combined exposure on a 40-m high mast. The frequency modulation (FM) transmitter, located between the 10th and 30th metre, had the power of 25 kW, whereas an ultra-high frequency (UHF) transmitter of 5 kW occupied the top 8 m of the mast. Measured and calculated values of the electric field strength exceeded the reference levels up to 10 times; however, the results for the specific absorption rate (SAR) values show that the reference levels are very conservative for FM exposure, i.e., basic restrictions are not exceeded even when the reference levels are exceeded 10 times. However, for UHF exposure the reference levels are not conservative; they give a good prediction of real exposure.
- Źródło:
-
International Journal of Occupational Safety and Ergonomics; 2012, 18, 2; 161-170
1080-3548 - Pojawia się w:
- International Journal of Occupational Safety and Ergonomics
- Dostawca treści:
- Biblioteka Nauki
Artykuł