- 181. [TowerTalk] Stranded vs solid wire (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Tue, 23 Dec 1997 14:42:26 -0500 (EST)
- Pete, Well, long ago, someone advertised that they used stranded wire in their product because of its superiority, and those who bought it, also bought the line and invented reasons why stranded was
- /archives//html/Towertalk/1997-12/msg00587.html (10,711 bytes)
- 182. [TowerTalk] Modeling loads and transmission lines: part 3 (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Sun, 28 Dec 1997 08:00:49 -0500 (EST)
- I have just placed part 3 of the series on "modeling loads and transmission lines" at the site, the first of 2 sections on modeling transmission lines. Part 4 is yet to come. I hope the new section i
- /archives//html/Towertalk/1997-12/msg00653.html (7,953 bytes)
- 183. [TowerTalk] 40-meter quads (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Tue, 30 Dec 1997 10:01:05 -0500 (EST)
- Interesting how questions occur in batches. Without prior note, 2 folks in very different places asked me a couple of questions about the potential for quads--both full-size and shrunken--on 40 meter
- /archives//html/Towertalk/1997-12/msg00672.html (7,578 bytes)
- 184. [TowerTalk] baluns and wire antenna (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Tue, 30 Dec 1997 13:43:14 -0500 (EST)
- The major lobes will indeed be broadside to the wire, as if it were a dipole. Sloping the wires into a Vee simply reduces the side nulls--the greater the slope, the greater the reduction. With low an
- /archives//html/Towertalk/1997-12/msg00682.html (8,490 bytes)
- 185. [TowerTalk] Last part of modeling loads and lines (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Wed, 31 Dec 1997 21:48:33 -0500 (EST)
- I have just placed at my site the last part of the series on modeling with loads and transmission lines. The last part deals with modeling transmission line stubs, whether as parts of matching system
- /archives//html/Towertalk/1997-12/msg00742.html (7,307 bytes)
- 186. [TowerTalk] 80 meter wire beam (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Sat, 1 Nov 1997 06:45:51 -0500 (EST)
- Lee, Your modeling of the 75-meter reversible wire beam looks to be very sound. The loss relative to a flattop version is real, since the elements are always below the peak height. The TO angle is co
- /archives//html/Towertalk/1997-11/msg00005.html (9,921 bytes)
- 187. [TowerTalk] Johnson Matchbox (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Sat, 1 Nov 1997 09:52:14 -0500 (EST)
- I have heard the Johnson Matchbox described as a modified Z match, which is not quite right. Having just obtained one, I thought I might describe the circuit, which appears to be very similar to the
- /archives//html/Towertalk/1997-11/msg00007.html (10,776 bytes)
- 188. [TowerTalk] Tuner notes (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Sun, 2 Nov 1997 08:09:45 -0500 (EST)
- I have placed the notes I recently distributed on the Johnson Matchbox (with some additions on the Annecke link-coupled tuner and a simplified schematic of them) at the site as additions to the entry
- /archives//html/Towertalk/1997-11/msg00031.html (7,468 bytes)
- 189. [TowerTalk] Bead Baluns (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Mon, 3 Nov 1997 17:39:27 -0500 (EST)
- W.E. Sabin, W0IYH, did an extensive article on the 1:1 current choke in the July, 1997, QEX. He found that 100 bead type 43 chokes could handle more power than the traditional 50 bead type 77 chokes.
- /archives//html/Towertalk/1997-11/msg00062.html (8,180 bytes)
- 190. [TowerTalk] new at site (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Tue, 4 Nov 1997 21:36:44 -0500 (EST)
- I have placed the latest 10-10 News column (coax short story) and Low Down episode (making yur ATU work on any band) at the site. Nothing especially new here--just a review of some fundamentals. -73-
- /archives//html/Towertalk/1997-11/msg00082.html (7,256 bytes)
- 191. [TowerTalk] New Cushcraft Tribanders (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Thu, 6 Nov 1997 13:36:50 -0500 (EST)
- Possibly (but do not know) more even characteristics across the bands or even wider SWR bandwidth, plus a tad more F-B here and there, etc. Wish all spec sheets included curves of kety characteristi
- /archives//html/Towertalk/1997-11/msg00105.html (7,656 bytes)
- 192. [TowerTalk] Yagi gain (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Fri, 7 Nov 1997 07:03:32 -0500 (EST)
- I regret that many of the notes, either to me or to the list, relative to the Cushcraft published gain number, have taken an unfortunate turn. They look like attempts to either support or detract fro
- /archives//html/Towertalk/1997-11/msg00126.html (13,080 bytes)
- 193. [TowerTalk] link tuners (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Wed, 12 Nov 1997 07:34:46 -0500 (EST)
- I have saved some 55 messages so far related to interest in the re-emergence of a link-coupled tuner on the market--and I know some did not get saved along the way. Interest is split between low and
- /archives//html/Towertalk/1997-11/msg00269.html (8,068 bytes)
- 194. [TowerTalk] Fwd: grounding bulkhead (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Fri, 14 Nov 1997 07:19:48 -0500 (EST)
- I have used bulkheads at several positions in the antenna feedline chains without problems for years, although I do not have many antennas up. On is near the top of the tower, where the coax shield a
- /archives//html/Towertalk/1997-11/msg00336.html (8,506 bytes)
- 195. [TowerTalk] Link Coupler tutorial (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Fri, 21 Nov 1997 08:16:50 -0500 (EST)
- As promised, I have placed a trial draft of a link coupler tutorial at the site. It is listed under a new subdivision on transmission lines and impedance matching to make it easier to find. The 5 par
- /archives//html/Towertalk/1997-11/msg00580.html (8,322 bytes)
- 196. [TowerTalk] Re: Help! Links Shorted! (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Sat, 22 Nov 1997 06:15:08 -0500 (EST)
- Jim, I happen to have my small Match Box open. It too has had the relay and all removed. The tap is at the 3rd turn. This appears to be consistent with the paperwork. The remaining turns of the link
- /archives//html/Towertalk/1997-11/msg00596.html (8,073 bytes)
- 197. [TowerTalk] "Natural Towers" (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Sat, 22 Nov 1997 12:02:57 -0500 (EST)
- Both the Scotsmans Delight and the 1-element Rotary were Lew McCoy articles in QST originally. In those days, aluminum tubing was not a hardware store item, so the 1-element rotary was made from elec
- /archives//html/Towertalk/1997-11/msg00605.html (8,264 bytes)
- 198. [TowerTalk] G5RV pattern (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Wed, 26 Nov 1997 07:07:08 -0500 (EST)
- Frank, The patterns for a 102' doublet, which is what the G5RV is before the feecd system, are independent of the feed system. There is at my site a compendium of 102' doublet patterns from models a
- /archives//html/Towertalk/1997-11/msg00689.html (8,402 bytes)
- 199. [TowerTalk] Re: Help! Basic TL theory (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Wed, 26 Nov 1997 08:45:40 -0500 (EST)
- Steve, Your situation of wanting a compensating capacitive reactance to reduce SWR at 3.8 MHz for a resonant 3.5 MHz dipole has several possibilities. First, HAMCALC (from VE3ERP) has some utilities
- /archives//html/Towertalk/1997-11/msg00690.html (11,019 bytes)
- 200. [TowerTalk] Need help with series coax impedence transformer (score: 1)
- Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
- Date: Wed, 26 Nov 1997 09:01:00 -0500 (EST)
- Chuck, The Regier series matching equations have been incorporated into HAMCALC from VE3ERP for a long time under the program name "Series Section Matching Transformer." I am not certain of download
- /archives//html/Towertalk/1997-11/msg00691.html (9,706 bytes)
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