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目的 对 2个品牌 4种型号的对讲机微波辐射进行测定研究。方法 使用已校正的国产ML 91型微波漏能测试仪 ,测定 4种型号 199台对讲机的微波辐射强度。结果 发射状态下距离对讲机天线部 5cm处和各部位 5cm处微波漏能平均功率密度分别为 (1316 .0± 14 4 .3)、(971.0± 131.6 )μW/cm2 ,均明显高于待机状态 [分别为 (14 .4± 5 .3)、(13.2± 4 .9) μW/cm2 ],差异有显著性 (P <0 .0 1)。在发射状态下距离对讲机不同部位 5 0cm处微波漏能平均功率密度为 (35 7.3± 2 7.8) μW/cm2 。 4种型号对讲机在发射通话状态下 ,对持机者的头、胸、腹部接触微波漏能平均功率密度日总计量为(94 5 .5±4 4 7.1) μW·h/cm2 ,超过国家作业场所微波辐射卫生标准的日总计量 (40 0 μW·h/cm2 )。结论 对讲机在发射状态的微波漏能明显高于待机状态。对讲机微波漏能以天线部最高。对讲机在发射状态 ,对持机者的头、胸、腹部微波漏能大部分超过国家作业场所微波辐射卫生标准 ,对持机者健康可造成潜在的影响 ,应做好防护工作。
Objective To determine the microwave radiation of 4 models of two brands of walkie-talkies. Methods The domestic ML 91 microwave leakage energy tester, which has been calibrated, was used to measure the microwave radiation intensity of four radios of 199 radios. Results The average power densities of microwave leakage energy at 5cm and 5cm of the radiobeacons were respectively (1316.0 ± 14.4.3) and (971.0 ± 131.6) μW / cm2 in the transmitting state, which were significantly higher than those in standby state [ Respectively, (14.4 ± 5 .3), (13.2 ± 4.9) μW / cm2], the difference was significant (P <0.01). The average power density of microwave leakage energy at different positions of the walkie-talkie at 50 cm at launch was (35 7.3 ± 2 7.8) μW / cm2. 4 kinds of walkie-talkie in the call state, the holder of the head, chest, abdomen contact microwave leakage average power density daily total (94.5 ± 4 4 7.1) μW · h / cm2, more than the national homework Total daily solar radiation health standards (40 0 μW · h / cm2). Conclusion Walkie talkie in the launch of the microwave leakage energy significantly higher than the standby state. Walkie-talkie microwave antenna leakage to the Ministry of the highest. Walkie-talkies in the launch state, the holder of the head, chest, abdomen, most of the microwave leakage over the national workplace microwave radiation health standards, the health of the holder may have a potential impact, should do a good job of protection.