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Total 13 documents matching your query.

1. Topband: "T"-Top Vertical Antennas (score: 1): Author: "Edward Swynar" <gswynar@durham.net>; Date: Thu, 23 Jul 2009 13:42:14 -0400; Hi All, I guess I'm just plain stupid, or something, because I still can't seem to be able to wrap my head around this one...! One of the advantages of the "T" antenna--vs. the inverted "L"--is that; /archives//html/Topband/2009-07/msg00101.html (8,549 bytes)
2. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Fri, 24 Jul 2009 08:45:37 -0400; Correct. Also correct. Absolutely not. Your interpretation is incorrect. The vertically polarized radiation is proportional to the integral of the current from the feedpoint to the junction of the "; /archives//html/Topband/2009-07/msg00110.html (8,927 bytes)
3. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: "K9AY" <k9ay@k9ay.com>; Date: Fri, 24 Jul 2009 10:44:30 -0500; I went through a modeling exercise like this a while back: * A Tee-top vertical of #12 wire, 70 ft. vertical and +/-44 ft. horizontal has a non-reactive feedpoint (resonant) in the 160M band. * Lengt; /archives//html/Topband/2009-07/msg00114.html (9,317 bytes)
4. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Fri, 24 Jul 2009 11:59:22 -0400; For the historians on the list, one of the first amateur radio transmissions heard across the Atlantic Ocean occurred during the sponsored ARRL transatlantic tests in 1921-1922. Station 1BCG in Green; /archives//html/Topband/2009-07/msg00115.html (8,650 bytes)
5. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: Rick Stealey <rstealey@hotmail.com>; Date: Sat, 25 Jul 2009 17:02:58 +0000; Last winter I had some free time on my hands and I did some reading about the transatlantic tests, and then researched through many QSTs of the period to see when modern versions of antennas were di; /archives//html/Topband/2009-07/msg00119.html (9,320 bytes)
6. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: <donovanf@starpower.net>; Date: Sat, 25 Jul 2009 13:08:40 -0400 (EDT); A further description of the 1BCG station can be found here http://www.radioclubofamerica.org/history.php?page=1921.html 73 Frank W3LPL -- Original message -- ________________________________________; /archives//html/Topband/2009-07/msg00120.html (9,704 bytes)
7. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Sat, 25 Jul 2009 16:32:27 -0400; likely they didn't realize it was their "feeder" doing all the work and the flattop radiation was being cancelled out ! By 1921, they knew the importance of the flat-top as a non-radiating loading d; /archives//html/Topband/2009-07/msg00122.html (9,201 bytes)
8. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: "DF3KV" <df3kv@t-online.de>; Date: Sat, 25 Jul 2009 23:00:04 +0200; I read the antenna description as a "T" vertical. The top load being flat, not a Vee or something else. "It suffices to say that, the antenna system consisted of a "T" type cage with a 100 foot flat; /archives//html/Topband/2009-07/msg00123.html (10,332 bytes)
9. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: "Herbert Schoenbohm" <herbs@vitelcom.net>; Date: Sun, 26 Jul 2009 10:33:53 -0400; When I was looking for a RF Ammeter with a thermocouple in the late 50's to get my Marconi T working well (and they were more available then at a reasonable price) an OT admonished me and said there; /archives//html/Topband/2009-07/msg00130.html (10,230 bytes)
10. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: Rick Stealey <rstealey@hotmail.com>; Date: Sun, 26 Jul 2009 14:38:14 +0000; Paul, There's still some discrepancy here. I have the Radio Club of America commemorative publication on the 1921 tests. In it Amy and Burghard describe the station antenna: "As soon as the antenna a; /archives//html/Topband/2009-07/msg00131.html (9,452 bytes)
11. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Sun, 26 Jul 2009 11:54:30 -0400; America commemorative publication on the 1921 tests. In it Amy and Burghard describe the station antenna:..." Going back that far, there's bound to be some discrepancies about the 1BCG feed detail,; /archives//html/Topband/2009-07/msg00132.html (9,722 bytes)
12. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: <donovanf@starpower.net>; Date: Sun, 26 Jul 2009 15:37:36 -0400 (EDT); Paul, The snippet quoted from the Proceedings is the root of the confusion about the 1BCG antenna. The 78 page Proceedings documents the antenna, the entire station, and Godley's DXpedition to Scotla; /archives//html/Topband/2009-07/msg00135.html (11,649 bytes)
13. Re: Topband: "T"-Top Vertical Antennas (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Sun, 26 Jul 2009 16:20:11 -0400; Frank, I had nearly forgotten about the February 1922 issue of QST. Better than a photo, it shows a detailed drawing of the "T" top-hat connection, including a bird's eye view of the elevated radial; /archives//html/Topband/2009-07/msg00136.html (9,222 bytes)

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