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Total 54 documents matching your query.

41. Re: Topband: Beverage question (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Wed, 28 Nov 2012 10:58:24 -0500
So, how to measure the bev? Is this procedure correct: The bev is ~8 feet above ground. The far end is open, not grounded, no resistor. The analyzer connects directly to the bev and the ground rod at
/archives//html/Topband/2012-11/msg00429.html (8,645 bytes)

42. Re: Topband: Beverage question (score: 1)
Author: "Lennart M" <lennart.michaelsson@telia.com>
Date: Wed, 28 Nov 2012 17:01:13 +0100
...or for a single band, instead of using ground rods, use a fair ground radial network at the far side. Len SM7BIC --Ursprungligt meddelande-- Från: Topband [mailto:topband-bounces@contesting.com] F
/archives//html/Topband/2012-11/msg00430.html (8,874 bytes)

43. Topband: Beverage Question (score: 1)
Author: "Jim Garland" <4cx250b@miamioh.edu>
Date: Sat, 20 Sep 2014 08:06:34 -0600
I want to replace the 450 ohm ladder line for my two DXE 720 ft long bi-directional beverages with two lengths of WD-1/TT field telephone wire. The wires will be secured only at the ends, but will be
/archives//html/Topband/2014-09/msg00105.html (8,052 bytes)

44. Re: Topband: Beverage Question (score: 1)
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Sat, 20 Sep 2014 10:34:26 -0400
Jim, The DXE boxes are designed for 450 ohm ladder line which has a much higher impedance than WD1-A wire. Using the DXE boxes may work but Gary's boxes (KD9SV) will work better as they are designed
/archives//html/Topband/2014-09/msg00106.html (8,545 bytes)

45. Re: Topband: Beverage Question (score: 1)
Author: "David Harmon" <k6xyz@sbcglobal.net>
Date: Sat, 20 Sep 2014 10:00:47 -0500
Jim.....confirmed on Herb's comments. In preparation for installation of the DXE I had a long conversation with Rod about the impedance and he assured me that it would be difficult to match the imped
/archives//html/Topband/2014-09/msg00107.html (10,825 bytes)

46. Re: Topband: Beverage Question (score: 1)
Author: Tim Shoppa <tshoppa@gmail.com>
Date: Sat, 20 Sep 2014 11:03:38 -0400
I have had excellent success with the clothesline pulleys. They are clearly not life-rated or mariner quality, but for ham antenna use I strongly recommend them. I have had several in trees/sky for 5
/archives//html/Topband/2014-09/msg00108.html (9,747 bytes)

47. Re: Topband: Beverage Question (score: 1)
Author: MU 4CX250B <4cx250b@miamioh.edu>
Date: Sat, 20 Sep 2014 09:04:58 -0600
_________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2014-09/msg00109.html (10,798 bytes)

48. Re: Topband: Beverage Question (score: 1)
Author: MU 4CX250B <4cx250b@miamioh.edu>
Date: Sat, 20 Sep 2014 09:10:27 -0600
Thanks, Dave. Right you are about the problems of 450 ohm ladder line flapping in the breeze! I've had to spend several days each autumn repairing multiple breaks in the lines, even with supports spa
/archives//html/Topband/2014-09/msg00110.html (11,756 bytes)

49. Re: Topband: Beverage Question (score: 1)
Author: "Carl" <km1h@jeremy.mv.com>
Date: Sat, 20 Sep 2014 11:14:14 -0400
The way I understand is that you will be using the WD-1A as individual lines with each having its wires connected in parallel. Id start by calculating the resultant wire gauge such as say two #24 in
/archives//html/Topband/2014-09/msg00111.html (10,081 bytes)

50. Re: Topband: Beverage Question (score: 1)
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Sat, 20 Sep 2014 14:53:00 -0400
No my mistake as the spacing of the two parallel conductors would determine the impedance but the mismatch from 600 ohms to 450 would also not be good. It wold be easier to get working IMHO with a si
/archives//html/Topband/2014-09/msg00112.html (11,202 bytes)

51. Re: Topband: Beverage Question (score: 1)
Author: jeremy maris <jeremy@maris.plus.com>
Date: Sun, 21 Sep 2014 10:09:26 +0100
I've just finished putting up a ~300m NE/SW reversible beverage at G4AQG using two pairs of paralleled WD1/TT wire for the feeder, spaced 50mm apart. I used nine 2.7m 3x3 posts with electric fence in
/archives//html/Topband/2014-09/msg00113.html (10,665 bytes)

52. Re: Topband: Beverage Question (score: 1)
Author: jeremy maris <jeremy@maris.plus.com>
Date: Sun, 21 Sep 2014 20:34:20 +0100
The way I looked at it was that the equivalent diameter would be a bit less than twice the diameter of the wires plus the spacing. According to the Mil Spec for WD-1A/TT is 0.84mm diameter per conduc
/archives//html/Topband/2014-09/msg00115.html (12,206 bytes)

53. Topband: Beverage question (score: 1)
Author: W0MU Mike Fatchett <w0mu@w0mu.com>
Date: Mon, 5 Dec 2016 12:11:22 -0700
I am looking to supplement my RCV arrays with a bi directional Beverage at about 70 degrees. The path is along an existing barb wire fence line. I can run it approx 480 ft. The last 150 ft or so ther
/archives//html/Topband/2016-12/msg00054.html (7,289 bytes)

54. Re: Topband: Beverage question (score: 1)
Author: Guy Olinger K2AV <k2av.guy@gmail.com>
Date: Mon, 5 Dec 2016 15:06:44 -0500
Hi Mike, Running along close to a barbed wire fence, let's call that any wire-based or metal fence, will trash the performance in most cases. This includes an electric fence. If you are the owner or
/archives//html/Topband/2016-12/msg00065.html (8,385 bytes)


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