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41. Topband: 4 square array (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Sat, 5 Apr 2008 08:39:02 -0700; First congratulations Alan on your commitment for a 4-square on 160. I use a 90 foot top loaded similar aluminum vertical here in Oregon. I find the use of four guy wires very convenient as it allows; /archives//html/Topband/2008-04/msg00005.html (7,743 bytes)
42. Topband: More - lightning protection on 4 sq (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Fri, 13 Jun 2008 19:43:34 -0700; Adding 5 ohms reactance to the 160 meter 4-square elements is just like tuning down frequency about 20kHz from a verticals resonance. They have about 5 ohms reactance of their own then. Adding the ar; /archives//html/Topband/2008-06/msg00015.html (7,073 bytes)
43. Topband: W8JI verticals proximity to fence (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Tue, 17 Jun 2008 21:19:41 -0700; Charlie, you did not mention what kind of an array you were planning. The answer would be very different with a simple cardioid array or 4-square as compared to a wide spaced BSEF type array. You als; /archives//html/Topband/2008-06/msg00048.html (9,259 bytes)
44. Topband: reversible Beverage v none reversible Beverage (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Sat, 8 Nov 2008 12:13:23 -0800; Hi Neil, My first questions about problems with your reversible Beverage are: How long is the Beverage antenna? How far away and where in relationship is your TX antenna? Do you remember to terminate; /archives//html/Topband/2008-11/msg00063.html (7,994 bytes)
45. Topband: Oregon High Desert Report (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Wed, 19 Nov 2008 10:24:02 -0800; Last night was a night where I got to remember why I put up all my RX antennas every year. I first had decided to look for Vlad at ER4. It was not long before he was in the log with his usual big sig; /archives//html/Topband/2008-11/msg00125.html (7,635 bytes)
46. Topband: Multiple Beverage Grounding (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Thu, 20 Nov 2008 13:06:20 -0800; Hi Herb, I just looked at the DXE site and they say their Beverage system has isolated grounds. I would not tie the grounds together Between Beverages. It looks like you will get plenty of isolation; /archives//html/Topband/2008-11/msg00134.html (7,627 bytes)
47. Topband: H44MY (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Sat, 22 Nov 2008 12:52:07 -0800; Hi Jim: I worked H44MY on Top-Band at 1216Z on 11-21. He was not particularily strong here in Central Or. I also noticed that he would not CQ very long before changing bands. Usually only for a few s; /archives//html/Topband/2008-11/msg00161.html (7,154 bytes)
48. Topband: WD-1A 2-way Beverage (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Sat, 22 Nov 2008 16:11:44 -0800; Hi Dave: One look at the specs for WD-1A scares me. I do not see how one could successfully send any RF down one of these wires as a differential transmission line. That is exactly what happens, and; /archives//html/Topband/2008-11/msg00166.html (8,228 bytes)
49. Topband: WD-1A 2-way Beverage (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Sun, 23 Nov 2008 12:00:54 -0800; Thanks Andrey you have confirmed my suspicions but. reception is not "injected" at feed point, so direct multiplication of attenuation by length does not play here. It seems to me that All the signal; /archives//html/Topband/2008-11/msg00181.html (9,629 bytes)
50. Topband: Reversible Bev using ladderline?? (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Sun, 23 Nov 2008 19:33:59 -0800; Mike check with a local farm store for insulators designed for Electric fence tape. If you have no local farm store you should be able to find farm supplies here on the net. Googling fence tape insul; /archives//html/Topband/2008-11/msg00190.html (6,939 bytes)
51. Topband: WD-1A 2-way Beverage (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Tue, 25 Nov 2008 18:15:36 -0800; Thanks Andrey for your insights on one of Top-Bands favorite toys The Beverage antenna. I think we agree on almost all points. I certainly agree. I certainly agree. I did not mean to imply that the s; /archives//html/Topband/2008-11/msg00222.html (10,561 bytes)
52. Topband: DX Engineering ARAV-1P Failures (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Wed, 3 Dec 2008 09:38:26 -0800; Hi Steve: The addition of a static draining choke in a Hi impedance antenna system is in my opinion an ill advised idea. The DXE amps I believe allready use a peaking resonance utilizing an inductor; /archives//html/Topband/2008-12/msg00028.html (7,625 bytes)
53. Topband: EU signals (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Wed, 3 Dec 2008 18:38:55 -0800; Hi Steve: I think there are several things going on as to why you are hearing EU now. First of all, the stations you mention, ES1 and OM are some of the areas of EU that are in the more Northerly dir; /archives//html/Topband/2008-12/msg00034.html (8,718 bytes)
54. Topband: Matching Transformer (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Sun, 28 Dec 2008 11:20:51 -0800; A couple of observations on matching Bobs Beverage. First I cannot figure out why some are suggesting a Balun in addition to the fine Job Bob did making the ISOLATED winding matching transformer. Unl; /archives//html/Topband/2008-12/msg00257.html (9,903 bytes)
55. Topband: Matching Transformer (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Mon, 29 Dec 2008 17:09:09 -0800; Bob said " The ferrite donut I used to make the transformer was FT-114-43, today I just read where I really should have used the 75 instead of the 43 mix." First off, I do not think there are any man; /archives//html/Topband/2008-12/msg00275.html (9,531 bytes)
56. Topband: Boring Update - 30-Dec (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Tue, 30 Dec 2008 11:48:27 -0800; I did get up early this a.m. specifically to catch JD1BMM. As with Tree he was pretty easy from here. Still hoping for XU7 and HS0. Ive heard them but no Qs yet. I usually just listen and compare wha; /archives//html/Topband/2008-12/msg00290.html (8,091 bytes)
57. Topband: W7IUV preamp info (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Tue, 30 Dec 2008 18:55:57 -0800; Here is an interesting tidbit of information about "feedback" types of RF amplifiers. Larry mentioned the importance of terminating filters connected to the input of his amp. All of the feedback type; /archives//html/Topband/2008-12/msg00300.html (7,816 bytes)
58. Topband: Mystery Signals on 160 (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Sun, 4 Jan 2009 18:29:30 -0800; On occasion I hear the triple beep signals here on the low end of 160. I too believe it is a Hyperfix navigation system. Hyperfix has several modes and therefore not all systems sound alike. I believ; /archives//html/Topband/2009-01/msg00023.html (6,975 bytes)
59. Topband: New Beverage (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Tue, 6 Jan 2009 06:40:44 -0800; Congrats on getting the new Beverage working Greg. I did some tests about 10 years ago measuring the impedance of ground rods and radials. One of the tests was measuring the impedance between arrays; /archives//html/Topband/2009-01/msg00032.html (7,382 bytes)
60. Topband: 2-wire Beverage (score: 1): Author: "Lee K7TJR" <k7tjr@msn.com>; Date: Thu, 8 Jan 2009 09:54:30 -0800; While I agree that in the REVERSE direction on 2 wire Beverages they work OK with one wire open and one grounded, I cannot wrap my mind around what the termination resistance is in the forward direct; /archives//html/Topband/2009-01/msg00064.html (7,846 bytes)

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