- 1. Topband: phase (score: 1)
- Author: "Jim Jarvis" <jimjarvis@comcast.net>
- Date: Wed, 14 Apr 2004 11:50:18 -0000
- How do you distinguish between a 180 degree phase shift, and polarity reversal? Unless you're timing logic edges, or counting cycles, they look the same to me. I was designing a log-periodic stack a
- /archives//html/Topband/2004-04/msg00077.html (7,675 bytes)
- 2. Re: Topband: phase (score: 1)
- Author: "K9AY" <k9ay@k9ay.com>
- Date: Wed, 14 Apr 2004 10:58:45 -0500
- from N2EA... Jim, If the waveform is symmetrical (like the sine waves of RF), there is no difference between a "flip" of polarity and a 180 degree delay -- other than a small loss in the delay line o
- /archives//html/Topband/2004-04/msg00078.html (7,494 bytes)
- 3. Re: Topband: phase (score: 1)
- Author: "Tom Rauch" <w8ji@contesting.com>
- Date: Wed, 14 Apr 2004 09:35:57 -0400
- Having used a system like this for several years, I can offer some comments from experience. They are indeed the same. 180 degrees is 180 degrees. To the contrary, if the receivers have similar delay
- /archives//html/Topband/2004-04/msg00080.html (10,525 bytes)
- 4. Re: Topband: phase (score: 1)
- Author: "K9AY" <k9ay@k9ay.com>
- Date: Wed, 14 Apr 2004 12:25:32 -0500
- from W8JI -- I have also listened in two directions at the same time, sometimes using the transmitting antenna as the 2nd antenna. In a contest situation, this has proven highly valuable -- Beverages
- /archives//html/Topband/2004-04/msg00081.html (8,993 bytes)
- 5. Re: Topband: phase (score: 1)
- Author: "Tom Rauch" <w8ji@contesting.com>
- Date: Wed, 14 Apr 2004 14:25:04 -0400
- That's not what I said or meant to imply. I don't see an improvement with close-spaced antennas even if they are dissimilar on 160 or 80. I hear a very large difference when the antennas are a few t
- /archives//html/Topband/2004-04/msg00085.html (8,252 bytes)
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