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Total 10 documents matching your query.

1. Topband: Feeding a Cell Tower for 160? (score: 1): Author: "Kyle Chavis" <wa4pgm@nelsoncable.com>; Date: Tue, 30 Jan 2007 22:13:29 -0500; I have several cellular sites that I maintain and was wondering what would be the easiest way to shunt feed or some other means to feed a tower for 160. The two sites I'm thinking about are in large; /archives//html/Topband/2007-01/msg00477.html (6,771 bytes)
2. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: Tree <tree@kkn.net>; Date: Tue, 30 Jan 2007 19:28:37 -0800; These towers are really too tall to do any kind of shunt feeding. If you did manage to load them, all of your energy will likely be going straight up. Half wave sloping dipoles - off in several key d; /archives//html/Topband/2007-01/msg00478.html (7,298 bytes)
3. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: Tim Duffy K3LR <k3lr@k3lr.com>; Date: Wed, 31 Jan 2007 06:34:36 -0600; I thought using a cell tower was also a good idea. I used one in the late 80's during the ARRL 160 contest operating from Ohio. I used it to hang an inverted vee dipole with the center at 300 ft. Str; /archives//html/Topband/2007-01/msg00479.html (8,379 bytes)
4. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: "George (K8GG) & Marijke Guerin" <gmguerin@voyager.net>; Date: Wed, 31 Jan 2007 07:56:41 -0500; My first comment is the 400 foot tower is over 3/4 wavelengths tall, electrically, so any shunt feed system would send most of the RF energy skyward, like off the end of a longwire. For the guyed tow; /archives//html/Topband/2007-01/msg00480.html (9,140 bytes)
5. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: "David Raymond" <daraymond@iowatelecom.net>; Date: Wed, 31 Jan 2007 07:11:13 -0600; Why not make the most use of that wonderful tower height? If you've got the real estate, hang some catenary ropes and put up a 4 square. Use normal ground mounted wire verticals and radials along wit; /archives//html/Topband/2007-01/msg00481.html (7,495 bytes)
6. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: Paul Baldock <pbaldock@verizon.net>; Date: Wed, 31 Jan 2007 07:07:58 -0800; How tall is too tall? I'm using a 140ft tower with a full size 40M beam on the top, which must be electrically well over a quarter wave. I'm shunt feeding it at 60ft with an omega match. - Paul _____; /archives//html/Topband/2007-01/msg00485.html (7,916 bytes)
7. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Wed, 31 Jan 2007 09:54:51 -0800; I have done exactly that at an old AT&T long lines site near Sacramento. It is a loaded half wave that is about 170 ft long, and it DOES work very well. Expect gain on the order of 3 dB in the direct; /archives//html/Topband/2007-01/msg00486.html (7,957 bytes)
8. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: Tree <tree@kkn.net>; Date: Wed, 31 Jan 2007 14:49:19 -0800; I think this is probably getting close to too tall. A tower this tall is begging for a 4 square of 1/4 wave verticals to be hung from it. I have never heard of a grounded tower being loaded as a vert; /archives//html/Topband/2007-01/msg00489.html (9,069 bytes)
9. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: Paul Baldock <pbaldock@verizon.net>; Date: Wed, 31 Jan 2007 16:25:52 -0800; Its difficult to know what "working well" is, with nothing to compare it to. You certainly beat me out when we're calling at the same time. But I did manage to work close to 100 countries last season; /archives//html/Topband/2007-01/msg00491.html (8,483 bytes)
10. Re: Topband: Feeding a Cell Tower for 160? (score: 1): Author: ly2ij@qrz.lt; Date: Thu, 1 Feb 2007 11:02:44 +0200 (EET); Hi, I really doubt that cell tower has good radio ground. I am involved in rollout of such a network in LY. Grounding is totally "electrical" and "anti lighting" - number of rods in ground, connected; /archives//html/Topband/2007-02/msg00002.html (7,347 bytes)

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