RF shielded hat for protecting cameraman from wireless video-camera exposure

Recently, people always exposed to electromagnetic field (EMF) in their everyday life including in daily use such as mobile phone, computers, refrigerators and microwave oven. Mobile phone especially, when is working, the transmitting antenna is placed very close to the user head, arise the question whether people who use it could be exposed to hazardous levels of electromagnetic radiation. Nowadays, due to the advanced development of wireless communication technologies, an increase number of occupations has shifted towards the usage of wireless devices, including cameraman when using Wireless Video-camera. Thus, cameramen are exposed to the EMF emitted by the Wireless Video-camera where this has increased the risk of health effects towards them. The thesis focuses on the investigation of effect of Wireless Videocamera to cameraman wearing RF shielded hat that can protect them from EMF exposure. The aim of this thesis is to add a new layer of shield on top of the hat that can protect cameraman from EMF exposure. This project focus on ordinary, adjustable size and comfortable hat. The hat is sewn with microwave absorber sheet, acted as a shield from RF-EMF. The effects of RF-EMF exposure on cameraman were investigated for cognitive performance, well-being, EMF perception and physiological parameters. The study aims to test whether exposure from Wireless Video-camera may affect cognitive performance, well-being, EMF perception and physiological parameters on cameraman and whether RF Shielded Hat that worn by cameraman can reduce the effect of exposure to RF-EMF fields. Two types of exposure conditions were considered: sham (no exposure) and wireless video-camera exposures and twenty healthy subjects were involved in this experiment. The two-way Analysis of Variance (ANOVA) revealed that there was no statistically significant (.P>O.OS) difference between with and without wearing RF Shielded Hat, and between the two signals (Sham and Wireless Videocamera exposures) except for PAL total error (adjusted) and RVP test. During the Wireless Video-camera exposure with RF Shielded Hat in well-being subjective symptoms, there was no significant difference (.P>0.05) between the Sham and active exposure in any subjective symptoms, indicating that none of the symptoms that were experienced were related to the Wireless Video-camera exposure. The investigations are extended further to investigate the EMF perception from the subject. Majority of subjects perceived that they can feel the RF-EMF radiation in both exposures (Sham and Wireless Video-camera signals). The results showed that for physiological parameters with RF Shielded Hat between Sham and Wireless Video-camera signal exposures there was no statistically significant (.P>O.OS) for all the physiological parameters except for systolic blood pressure (P<0.05). This research has led to a better understanding exposure effects on the neurophysiological and behavioural of subjects, particularly in the risk of occupational exposure field.