Archive for the 'Lost Articles' Category
A magnetic loop antenna for HF
Thursday, May 25th, 20064 elements Quagi antenna for 50 Mhz
Saturday, May 6th, 2006This is an interesting quagi antenna plan.
Total Boom Lenght is 3 m.

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Grounding is key to good reception
Monday, May 1st, 2006Newsgroups: rec.radio.shortwave
Subject: Grounding is key to good reception, was: Experience w/NRD-535
In your recent post you advised that coax should be grounded at two sites, first at the antenna and then just before entering the house. Is there an advantage in grounding at more than these sites?
With grounds the most common experience is “the more the merrier”. As you add more, however, you usually reach a diminishing returns (no pun intended) situation where there is no *observable* improvement: that’s usually a good place to stop. There are also exceptional circumstances where grounding increases noise problems, but these, in my experience, are much rarer than the pundits who preach against “ground loops” seem to think.
PSK31 Frequencies for QSO
Monday, May 1st, 2006The plan for PSK31 activity has always been (since PSK31 started) to concentrate activity starting from the bottom edge of the IARU RTTY bandplan, expanding upwards as activity increased. The exception is in the 10mts band in order to give non full privileges ham to meet. It was defined as 150 Hz above it. Keep in mind that all you need is about 100 Hz as channel separation.
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