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Tech Head - The Technology Section
SDR radio, Software Defined Radio
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<blockquote data-quote="Terryl" data-source="post: 1045254" data-attributes="member: 369937"><p>By the way Analog, I tried out your antenna, it worked somewhat OK for the North South birds, but the birds off to one side or the other were zip......Got to find (or make) an omni directional circularly polarized antenna with as much gain as possible, this may be a multi element type, the only one I can think of was one we tried back in the 60's, it looked like a spiral shaped Xmas tree, it was to be for TV signals from all directions, but was too costly.</p><p></p><p>The antenna I made with the PVC pipe was a full wave design, this may cause problems with direction of signal reception, I may modify it for halfwave, then do some sort of phase combination for gain.</p><p></p><p>You antenna is a quarter wave, you could do a second set of elements to make it a half wave.</p><p></p><p>Brain is now in design mode.........</p></blockquote><p></p>
[QUOTE="Terryl, post: 1045254, member: 369937"] By the way Analog, I tried out your antenna, it worked somewhat OK for the North South birds, but the birds off to one side or the other were zip......Got to find (or make) an omni directional circularly polarized antenna with as much gain as possible, this may be a multi element type, the only one I can think of was one we tried back in the 60's, it looked like a spiral shaped Xmas tree, it was to be for TV signals from all directions, but was too costly. The antenna I made with the PVC pipe was a full wave design, this may cause problems with direction of signal reception, I may modify it for halfwave, then do some sort of phase combination for gain. You antenna is a quarter wave, you could do a second set of elements to make it a half wave. Brain is now in design mode......... [/QUOTE]
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