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Total 6 documents matching your query.

1. Re: Topband: High Impedance RX Antennas (score: 1): Author: Dennis W0JX via Topband <topband@contesting.com>; Date: Mon, 3 Apr 2023 16:42:37 +0000 (UTC); There is an old saying "The enemy of good is perfect." You will be driven crazy by chasing down every slight variance from the ideal. That being said, it is important to check out the obvious areas; /archives//html/Topband/2023-04/msg00009.html (8,888 bytes)
2. Re: Topband: High Impedance RX Antennas (score: 1): Author: Frank W3LPL <donovanf@starpower.net>; Date: Mon, 3 Apr 2023 13:11:27 -0400 (EDT); Another highly recommended tool is a Time Domain Reflectometer. Tt easily detects any abnormalities in my 8-circle and 4-square arrays and stacked HF Yagi arrays and switches. Other than my hand held; /archives//html/Topband/2023-04/msg00010.html (11,303 bytes)
3. Re: Topband: High Impedance RX Antennas (score: 1): Author: Tree <tree@kkn.net>; Date: Mon, 3 Apr 2023 10:20:26 -0700; I guess most people have some kind of small antenna analyzer that has a TDR kind of function. I have not warmed up to them yet as the results I see seem to be "all over the place". Maybe I just don't; /archives//html/Topband/2023-04/msg00011.html (13,455 bytes)
4. Re: Topband: High Impedance RX Antennas (score: 1): Author: Don Moman VE6JY <ve6jy.1@gmail.com>; Date: Mon, 3 Apr 2023 11:33:10 -0600; A used Tek 1502 TDR is the "gold standard" to me anyway and they can be quite cheap at flea markets etc. They are "arm held" and self contained portable so ideal for up to 1000' runs and have enough; /archives//html/Topband/2023-04/msg00012.html (15,017 bytes)
5. Re: Topband: High Impedance RX Antennas (score: 1): Author: John Kaufmann via Topband <topband@contesting.com>; Date: Mon, 3 Apr 2023 14:09:32 -0400; Another tool I've found indispensable for setting up and troubleshooting phased vertical RX arrays is a two-port VNA. I use an Array Solutions VNA-2180 (now discontinued) for critical measurements. I; /archives//html/Topband/2023-04/msg00013.html (8,356 bytes)
6. Re: Topband: High Impedance RX Antennas (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 3 Apr 2023 12:18:02 -0700; In my professional life in pro audio, I started doing Time Domain Spectrometry in 1982, so I have a pretty good handle on how it works. There is a mathematical relationship between the frequency resp; /archives//html/Topband/2023-04/msg00015.html (9,387 bytes)

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