安徽省1984～1996年广播电视等系统无线电设备漏能现况调查

The investigation and analysis of the energy leak of the transmitter of the broadcast and TV system and during 19841996 in Anhui

目的了解安徽省１９８４～１９９６年间广播电视等系统无线电设备电磁波漏能现状。方法用已校准的ＭＬ－９１微波漏能仪和ＲＪ－２、ＲＪ－３场强仪按国家标准规定的方法测量。结果①科研测试、气象雷达（脉冲）、邮电通讯微波泄漏较高。调频广播超高频泄漏高于电视发射设备。中波转播、干扰台高频泄漏高达７０．２、６８．０ｖ·ｍ－１。②除高频发射泄漏较高外，微波发射机２０ｃｍ处漏能均值均低于５ｃｍ处（Ｐ＜０．０１）。③发射机在开盖状态漏能均值均高于封盖状态（Ｐ＜０．０１）。结论对上述行业要进行定期监督监测，并建议操作者在工作期间盖好屏蔽罩，远距离操作。

Objective To understand the present situation of energy leak of the radio transmitter of broadcast and television units during 19841996 in Anhui. Methods To use the calibrated instrument of ML91 type the energy leak of microwave and RJ2RJ3 type electric field intensity, measured according to the methods provided for by national standard. Results The energy leak of microwave of research unit, mefeorological radar and communication of post and telecommunication were high. The energy leak of ultra high frequency(UHF) of MF transmitter was high. The energy leak of HF of MW and the jamming station was high, with average values 70.268.0 vm-1 respectively. Obviously the mentioned above units were major units which should be supervised and monitored. Except for the energy leak of HF launch transmitter was high, the energy leak of microwave launch transmitter in 20 cm was significantly lower than that in 5 cm(P<0.01). The average values of energy leak of transmitter in open metal shell were obviously higher than that in close metal shell (P<0.01). Conclusions The mentions above units should be monitored and supervised regularly. Operators should shut the metal shell of transmitters, and keep enough distance from them.