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Total 32 documents matching your query.

21. Re: Topband: Two Wire Beverage Query... (score: 1): Author: Hardy Landskov <n7rt@cox.net>; Date: Sat, 21 Aug 2004 07:34:35 -0700; All, When I took a graduate course in antennas, we studied the Beverage. The lossy ground is what makes it work by tilting the electric field vector between the wire and ground. That creates an E-fie; /archives//html/Topband/2004-08/msg00040.html (11,762 bytes)
22. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Ford Peterson" <ford@cmgate.com>; Date: Sat, 21 Aug 2004 16:54:31 -0500; Tom-W8JI suggested: ...SNIP... I like your approach to this. So I grabbed a 21' piece of 1 - 5/16" fence top rail out of the dead antenna pile. And wound up an set of inductors on T-130-6 cores using; /archives//html/Topband/2004-08/msg00043.html (13,532 bytes)
23. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Chuck Hutton" <charlesh3@msn.com>; Date: Sat, 21 Aug 2004 19:51:15 -0700; We'd have to define "doesn't work well". The pattern will be basically the same, but the signal level will be down a bit due to the higher conductivity under the antenna. My favorite Beverage antenna; /archives//html/Topband/2004-08/msg00045.html (10,436 bytes)
24. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Chuck Hutton" <charlesh3@msn.com>; Date: Sat, 21 Aug 2004 20:40:27 -0700; Hardy: What you say is perfectly true, but only for a particular case. A lot of texts say that because that's what appeared in Beverage's original AIEE paper. Beverage was concerned only with LF sign; /archives//html/Topband/2004-08/msg00046.html (13,726 bytes)
25. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Chuck Hutton" <charlesh3@msn.com>; Date: Sat, 21 Aug 2004 21:12:45 -0700; Ford: First of all, I think ON4UN's values should be treated as approximations. The formulas he uses are simplified formulas for wires over pefect ground. There's quite a difference when the more dem; /archives//html/Topband/2004-08/msg00047.html (11,575 bytes)
26. Re: Topband: Two Wire Beverage Query... (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Sun, 22 Aug 2004 09:23:31 -0400; The thread on Beverage ground conditions has been one of the most interesting and productive discussions this year. I have learned a lot. To add to what Milt observed: All my Beverages are on an isla; /archives//html/Topband/2004-08/msg00048.html (10,782 bytes)
27. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Tom Rauch" <w8ji@contesting.com>; Date: Sun, 22 Aug 2004 10:56:40 -0400; analyzer into account. So I'm using a good model over perfect ground. In the case of both 160M and 80M, the model shows a "R" value of just under 5 ohms (4.9 on 160M and 4.7 on 80M). The no load vers; /archives//html/Topband/2004-08/msg00049.html (11,659 bytes)
28. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Ford Peterson" <ford@cmgate.com>; Date: Sun, 22 Aug 2004 12:44:03 -0500; ...SNIP... An explanation is in order. I'm looking at the 3rd edition of John-ON4UN's book. Figure 7-23 (A)describes the basic system you mention with one wire grounded at the end and one wire floati; /archives//html/Topband/2004-08/msg00051.html (12,800 bytes)
29. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Ford Peterson" <ford@cmgate.com>; Date: Sun, 22 Aug 2004 15:21:53 -0500; Interesting results... Good, solid data confirming ON4UN's table 7-10 info. After taking Tom's advice and choosing to measure the impedances correctly (i.e. lashing the two wires together at each end; /archives//html/Topband/2004-08/msg00052.html (11,559 bytes)
30. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Missouri Guy, N0TT" <n0tt1@juno.com>; Date: Mon, 23 Aug 2004 19:30:16 +0000; Hi Ford, The 340 ohms is close to the impedance of the antenna over ground. You can use Tom's method of measuring that impedance or there are other ways to do it. You might save yourself some effort; /archives//html/Topband/2004-08/msg00054.html (14,743 bytes)
31. Re: Topband: Two Wire Beverage Query... (score: 1): Author: Nick Hall-Patch <nhp@ieee.org>; Date: Tue, 24 Aug 2004 04:18:13 +0000; At 07:51 PM 20/08/2005, Tom Rauch wrote: It seems to me that I've seen some discussion about running a wire on the ground along the length of a beverage to connect the grounds between the feedpoint a; /archives//html/Topband/2004-08/msg00056.html (11,181 bytes)
32. Re: Topband: Two Wire Beverage Query... (score: 1): Author: "Missouri Guy, N0TT" <n0tt1@juno.com>; Date: Wed, 25 Aug 2004 01:47:06 +0000; Hi Jacques, I don't have a catalog number, but it's the heavy duty type, #18 copper-clad steel line, polyethelene insulated "window" line, and has a center-to-center spacing of 21mm (13/16"), and it; /archives//html/Topband/2004-08/msg00069.html (10,634 bytes)

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