新鲜事
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Starts: 1800 UTC Saturday, July 19, 2014 Ends: 2100 UTC Sunday, July 20, 2014 I. Contest Period: 27 hours for all statio ..
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有一些俄罗斯 日本 韩国 中国 VHF DX爱好者 http://rz0lwa.ru/chat.php 俄罗斯VHF UHF Chat 。。。 俄文 ..
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摘选 http://www.elecraft.com/K2_perf.htm#Main%20RX%20Table Lab Receiver Test Data Comparisons(ARRL QST Review Data, pl ..
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PA1B's QRPp Blog http://pa1b-qrp.blogspot.nl/ How I work with the Lowest possible power in CW QSO's with QRP and ..
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Near Vertical Incident Skywave (NVIS) Antenna Latest update: August 2012 Copyright © Pat Lambert - W0IPL Display A fe ..
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Optimal Length of Random Wire Antenna J. C. Sprott Department of Physics, University of Wisconsin, Madison, WI 53706, ..
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实时查看数据 可以了解传播状况 便于自己的QRP操作 DX Summit by OH2AQ http://www.dxsummit.fi/CustomFilte ..