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Total 22 documents matching your query.

1. [TowerTalk] Open Wire Line (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 22 Oct 1998 13:12:49 -0400; This might be of general interest to people with long feedlines. I'm installing a very tall tower for an expanded 160 system 1400 feet back from my shack. I needed a low-loss feeder to get RF back th; /archives//html/Towertalk/1998-10/msg00819.html (8,766 bytes)
2. [TowerTalk] Open Wire Line (score: 1): Author: w0opw@hotmail.com (David Wintheiser); Date: Thu, 22 Oct 1998 10:40:40 PDT; Since I've tried making my own open wire line and found it very difficult due problems finding spreader material, can you give any indication how commercially made ladder(window) line would perform?; /archives//html/Towertalk/1998-10/msg00820.html (8,310 bytes)
3. [TowerTalk] Open Wire Line (score: 1): Author: donald.s.tucker@exgate.tek.com (donald.s.tucker@exgate.tek.com); Date: Thu, 22 Oct 1998 12:34:25 -0700; Spreader source? Don W7WLL -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-t; /archives//html/Towertalk/1998-10/msg00822.html (10,817 bytes)
4. [TowerTalk] Open Wire Line (score: 1): Author: dlhough@vegas.infi.net (dlhough@vegas.infi.net); Date: Thu, 22 Oct 1998 19:08:50 -0700; You can get Lucite rod in 8 foot lenghts for under 5 bucks apiece. Good place to check is sign makers or plastic suppliers. We've made a lot of it. Use a 3/8" rod and make a simple jig to cut it in; /archives//html/Towertalk/1998-10/msg00831.html (8,637 bytes)
5. [TowerTalk] Open Wire Line (score: 1): Author: cebik@utkux.utcc.utk.edu (L. B. Cebik); Date: Thu, 22 Oct 1998 22:25:18 -0400 (EDT); For short runs or casual use, #14 and #12 in open wire parallel feedline may be satisfactory. However, for very long runs or just to have a reserve capability, following Tom's lead and using #8 or #; /archives//html/Towertalk/1998-10/msg00832.html (8,651 bytes)
6. [TowerTalk] Open Wire Line (score: 1): Author: basalop@gte.net (Jim Berry); Date: Thu, 22 Oct 1998 23:56:49 -0700; If you go to a sign place, they often will let you haul away all the plastic sign material you would like for nothing. Now this stuff is not rods, but sheets. You have to cut it up in strips and then; /archives//html/Towertalk/1998-10/msg00836.html (9,447 bytes)
7. [TowerTalk] Open Wire Line (score: 1): Author: n4kg@juno.com (T A RUSSELL); Date: Fri, 23 Oct 1998 05:46:22 -0600; Since at least the mid 1960's, W1EVT has had 3 sets of stacked half-waves in phase at half wavelength spacing on 19 Rohn 25 towers 140 ft high. These towers are on a hilltop across the road from his; /archives//html/Towertalk/1998-10/msg00838.html (9,237 bytes)
8. [TowerTalk] Open Wire Line (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Fri, 23 Oct 1998 08:56:52 -0400; Hi Dave, Don't know. There are too many types. I measured some ribbon-type "ladder" line and it was OK but no where near like the real stuff. The thing I don't like is how much it changes when it get; /archives//html/Towertalk/1998-10/msg00841.html (10,220 bytes)
9. [TowerTalk] Open Wire Line (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Fri, 23 Oct 1998 09:04:59 -0400; Home made from UV resistant Lexan per 4X4NJ's suggestion. If the spreaders lasts through a whole year of GA sunshine without deterioration of any kind, I'm thinking of having a few thousand stamped; /archives//html/Towertalk/1998-10/msg00842.html (8,357 bytes)
10. [TowerTalk] Open Wire Line (score: 1): Author: n7ml@imt.net (Mike Lamb); Date: Fri, 23 Oct 1998 13:41:14 -0600; Jim, It might be a good idea, just to be safe, to throw the material into a microwave oven with a cup of water for a minute and see if it warms up or not. If it does, it may not be very good for RF.; /archives//html/Towertalk/1998-10/msg00845.html (10,406 bytes)
11. [TowerTalk] Open Wire Line (score: 1): Author: dlhough@vegas.infi.net (dlhough@vegas.infi.net); Date: Thu, 22 Oct 1998 16:01:53 -0700; Agree. Our runs have always been 100' or less. We have spreaders from a military installation, that as a brand spanking new 2LT we supervised the dismanteling of, and salvaged many many antenna insu; /archives//html/Towertalk/1998-10/msg00847.html (9,479 bytes)
12. [TowerTalk] Open Wire Line (score: 1): Author: dlhough@vegas.infi.net (dlhough@vegas.infi.net); Date: Thu, 22 Oct 1998 16:51:08 -0700; I lived and went to the Univ. of Minn. at Mpls. and used it there. Plenty of ice, and have lived in Las Vegas for boo koo years since where the sun does nothing but shine and this stuff stands up re; /archives//html/Towertalk/1998-10/msg00849.html (10,488 bytes)
13. [TowerTalk] Open Wire Line (score: 1): Author: n7cl@mmsi.com (Eric Gustafson); Date: Sat, 24 Oct 1998 13:42:48 -0700; Mike, We frequently use this crude but relatively effective method to identify dielectric material that is potentially suitable for RF work. But we never use any water along with the sample. Why are; /archives//html/Towertalk/1998-10/msg00859.html (9,608 bytes)
14. [TowerTalk] Open Wire Line (score: 1): Author: n7ml@imt.net (Mike Lamb); Date: Sat, 24 Oct 1998 21:20:50 -0600; Eric, I heard this from another Amateur many years back. He said it was to provide a load for the Magnetron so that you don't blow it. I don't know if he is right or not, but I always did it any way.; /archives//html/Towertalk/1998-10/msg00861.html (10,238 bytes)
15. [TowerTalk] Open Wire Line (score: 1): Author: designserv@ipass.net (LYN); Date: Sat, 24 Oct 1998 19:11:50 -0400; Sounds like a good idea, Mike. Our microwave came with instructions not to run it without something in it. Lyn, W4WDN -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk; /archives//html/Towertalk/1998-10/msg00862.html (9,127 bytes)
16. [TowerTalk] Open Wire Line (score: 1): Author: k9ofg@juno.com (RICHARD L OWENS); Date: Sat, 24 Oct 1998 18:23:44 -0500; Water in a microwave keeps the klystrom from burning itself up should the energy not be used in the subject material. Some people keep a cup of water in their empty microwave just to preserve the tub; /archives//html/Towertalk/1998-10/msg00863.html (9,284 bytes)
17. [TowerTalk] Open Wire Line (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sun, 25 Oct 1998 09:58:26 -0500; Hi Ron, I agree! Another thing people neglect is even a poor dielectric has negligible effect is the electric field is mostly outside the dielectric. For example, I use only 50 or so Lexan spreaders; /archives//html/Towertalk/1998-10/msg00869.html (8,424 bytes)
18. [TowerTalk] Open Wire Line (score: 1): Author: n7cl@mmsi.com (Eric Gustafson); Date: Sun, 25 Oct 1998 09:32:33 -0700; Hi Mike, Around here, we build a few very specialized products for the benefit of a really amazing group of people normally referred to in industry as "users". Our "users" are relatively unique in th; /archives//html/Towertalk/1998-10/msg00870.html (11,459 bytes)
19. [TowerTalk] Open Wire Line (score: 1): Author: n7cl@mmsi.com (Eric Gustafson); Date: Mon, 26 Oct 1998 14:03:20 -0700; Mike and I had a little discussion off reflector about the spreaders for open line. I think this portion of it may be useful enough that the reflector should be exposed to it. It is a bit long and it; /archives//html/Towertalk/1998-10/msg00890.html (13,520 bytes)
20. Re: [TowerTalk] Open wire line (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Tue, 1 Dec 2009 11:25:00 -0600; Despite what some wish to believe, it is easy to put up a balanced antenna and feed it with balanced feeder. You only need construct a 1/2 wave dipole fed at the center and get it reasonably high and; /archives//html/Towertalk/2009-12/msg00004.html (8,388 bytes)

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