SH-1型哨声接收设备与若干观测结果

1978年,我们研制了哨声和VLF发射的SH-1型接受设备。为研究哨声强度的频响特性,特别注意整机频响问题,并对环形接收天线频响作了校正。从1979年夏开始,在北京（磁纬28.9°N）使用这套SH-1型接收设备,获得一些与过去不同的观测结果。如1.哨声相对强度最大值在1 kc/s-4 kc/s频段,而不是在4 kc/s-6 kc/s间;2.哨声下截频低于地面-电离层波导截频的情况相当多,而不是很少。 本文还介绍了1981年夏日食期间利用这套接收设备在漠河（磁纬42.5°N）观测到的一些结果。

SH-1 RECEIVING EQUIPMENT OF WHISTLERS AND SOME OBSERVATIONAL RESULTS

In 1978, we designed and made SH-1 pquipment for receiving whistlers and VLF emissions. In order to study the spectrum characteristics of whistler intensity, the frequency response of the equipment including antenna is paid special attention, and the frequency response of the loop antenna is rectified. This equipment has been used in Beijing （Geomag. Lat. 28.9#N） since the summer of 1979, and some new results were obtained. They are: 1. the maximum of relative intensity of whistlers is situated between 1 kc/s-4 kc/s rather than 4 ke/s-6 ke/s; 2. it is considerable that the low cutoff frequency of whistler is lower than that of the ground-ionosphere wave-guide.This instrument was used during the period of the solar eclipse at Mohe region （Geomag. Lat. 42.5#N） in the summer of 1981, and some observational results are presented.