Mail Archive Search: <+from:herbs@vitelcom.net>

Results:

References: [ +from:herbs@vitelcom.net: 620 ]

Total 620 documents matching your query.

21. [Fwd: Topband: Bev Wire] (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Wed, 30 Jan 2002 17:32:40 +0000; To: <topband@contesting.com> Date: Tue, 29 Jan 2002 14:29:06 -0400 From: Herb Schoenbohm <herbs@vitelcom.net> Subject: Re: Topband: Bev Wire To: "by way of Bill Tippett <btippett@alum.mit.edu>" <K5NZ; /archives//html/Topband/2002-01/msg00264.html (8,523 bytes)
22. Topband: Bev Wire (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Wed, 30 Jan 2002 14:30:49 -0400; An excellent, strong, and corrosion free Beverage wire is cable TV lashing wire. It is stainless steel and conveniently comes in 500 foot rolls. It is used by cable TV construction crews to lash the; /archives//html/Topband/2002-01/msg00265.html (7,384 bytes)
23. Topband: Delta Loop (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Mon, 12 Nov 2001 11:05:44 -0400; The important consideration in my view is that the Delta Loop allows you to get up and running with a fair performing 160 or 80 meter antenna without much effort. However according to the original te; /archives//html/Topband/2001-11/msg00049.html (8,704 bytes)
24. Topband: shunt feed help needed (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Mon, 08 Oct 2001 02:15:23 +0100; Pete, The ratio of the #14 wire to the size of the tower, as well as the lower C3E (even though the elements are insulated may be adding to your problem. My suggestion is to use a larger diameter shu; /archives//html/Topband/2001-10/msg00043.html (9,696 bytes)
25. Topband: Riley is Wrong (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Sat, 20 Oct 2001 16:19:39 +0100; Wasn't it said best by Thomas Jefferson long ago that "the least governed are the best governed"? If this issue is decided by bureaucrats, especially a bureaucrat with a personal agenda, it is doomed; /archives//html/Topband/2001-10/msg00174.html (6,700 bytes)
26. Topband: Beverage coax (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Sun, 21 Oct 2001 11:49:03 +0100; Robert, Some coax has more noise pickup than other mostly due to oxidation, water incursion, and poor shielding. One thing you can due is lay it on the ground and terminate it. Connect the other end; /archives//html/Topband/2001-10/msg00183.html (6,942 bytes)
27. Topband: screen type ground systems (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Sat, 22 Sep 2001 12:17:00 -0400; Expanded copper mesh is simply the best hands down! However, it is not inexpensive. But in the long run lasts for years. I check a 50 x 50 foot piece at a local BC station recently. It had been laid; /archives//html/Topband/2001-09/msg00122.html (7,346 bytes)
28. Topband: Dual Tophats (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Tue, 14 Aug 2001 17:40:56 -0400; Doug, Putting much above the beam is probably not worth the effort. Please consider putting horizontal stingers on both ends of the beam's boom. You might be able to make up for the loss of capacity; /archives//html/Topband/2001-08/msg00059.html (6,981 bytes)
29. Topband: Collins 75A4 (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Fri, 17 Aug 2001 13:19:41 -0300; As you can see, the intermod and blocking characteristics are not very good, especially at close spacing..... It is important to remember that the Collins 75A4 is a double conversion receiver on all; /archives//html/Topband/2001-08/msg00072.html (8,667 bytes)
30. Topband: Antennas (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Tue, 28 Aug 2001 11:29:10 -0300; so much with shorter ones. Yes indeed there seems to be a point of diminishing returns in respect to the efforts of using sloping wires to achieve resonance. However an improvement in the radiation; /archives//html/Topband/2001-08/msg00135.html (8,381 bytes)
31. Topband: Antennas (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Tue, 28 Aug 2001 12:50:46 -0300; Larry, Back in the 60's I worked for a AM station in Minneapolis (KQRS) which used a three tower directional array. All three towers were made electrically longer and the radiation resistance increas; /archives//html/Topband/2001-08/msg00137.html (10,247 bytes)
32. Topband: Beverage discussion (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Wed, 25 Jul 2001 03:23:28 -0400; Tom, I you decide on coax you can get some great bargains on 75 ohm RG6. In fact MCM (800-543-4330) has a 500 foot roll of dual foam RG-6 for under $100 bucks and you can easily separate it if you wa; /archives//html/Topband/2001-07/msg00049.html (7,346 bytes)
33. Topband: Summer Propagation (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Sun, 29 Jul 2001 08:52:32 -0400; Bob, The advantages in the communications spectrum for living in the mid latitudes are countless. Over the years comparing contest scores between, lets say, a KL7 or VE8 and KP4 help demonstrate the; /archives//html/Topband/2001-07/msg00074.html (9,481 bytes)
34. Topband: Tools for calculating vertical efficiency (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Fri, 15 Jun 2001 12:20:02 -0300; While working on an LPFM applications online with the FCC I noticed a series of tools the Audio Services Division makes available for general use. An interesting one is "Inverse Field Calculations fo; /archives//html/Topband/2001-06/msg00039.html (7,507 bytes)
35. Topband: Help (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Thu, 24 May 2001 09:41:41 -0300; Phil, A top wire that is long enough to produce a reasonable base impedance, such as a 3/8 wave series tuned to resonance, has a serious drawback by producing significant high angle radiation. That i; /archives//html/Topband/2001-05/msg00048.html (8,291 bytes)
36. Topband: prospective QTH evaluations (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Fri, 25 May 2001 16:01:10 -0300; Eric, It is important to know the level of HV and the type of construction, i.e. 3 phase, copper or aluminum wire, metal or wood power poles, new or old, treated or dry etc. At my QTH on ST. Croix th; /archives//html/Topband/2001-05/msg00061.html (8,777 bytes)
37. Topband: Tee Antenna (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Wed, 25 Apr 2001 09:59:38 -0300; Jerry, Hilltop antennas on top band are not really worth the effort if you can put a good vertical down in the low land. With an angle finder check the critical angle and don't worry get about anythi; /archives//html/Topband/2001-04/msg00075.html (7,525 bytes)
38. Topband: Inverted "L" (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Thu, 26 Apr 2001 14:46:21 -0300; Geoff, Another means of reducing the unwanted radiation from the top section and still getting the top loading you require for a reasonable impedance at the base is to reduce the flattop portion to 1; /archives//html/Topband/2001-04/msg00084.html (8,012 bytes)
39. Topband: Pennant antenna (score: 1): Author: herbs@vitelcom.net (Herb Schoenbohm); Date: Fri, 02 Mar 2001 11:54:51 -0400; If the commercial pre amps are to steep for your K6SE Pennant budget you can build one that is available in kit form. MCM Electronics (1-800-543-4330) They offer #80-1095 which uses surface mount com; /archives//html/Topband/2001-03/msg00017.html (7,099 bytes)
40. Topband: Beverage termination (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Sat, 03 Mar 2001 08:26:18 -0400; Just a question: Would it not make a difference and mitigate the vertical drop pick up problem by bringing the ground wire up to the horizontal wire and placing the termination value there? Herb Scho; /archives//html/Topband/2001-03/msg00036.html (7,096 bytes)

Current List: 21 - 40
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]