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Total 9 documents matching your query.

1. [Amps] corona on a quad (score: 1): Author: Charles Harpole <k4vud@hotmail.com>; Date: Fri, 13 Jul 2012 04:55:44 +0000; My understanding is that corona discharge would be most off a single isolated point, like the tip of a vertical ant or the ends of a yagi elements. I doubt the corners of a quad would act like that a; /archives//html/Amps/2012-07/msg00183.html (15,516 bytes)
2. Re: [Amps] corona on a quad (score: 1): Author: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>; Date: Fri, 13 Jul 2012 08:22:34 +0000; Hi Charles, Yes, we have suffered problems in a quad, but I guess that it can not be called "Corona", just power issue. I have designed a 4 elements quad for 27 MHz for a friend of mine who does "Key; /archives//html/Amps/2012-07/msg00184.html (18,678 bytes)
3. Re: [Amps] corona on a quad (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Fri, 13 Jul 2012 11:16:02 +0200; Fibreglass is a very poor isolator, especially when wet. It turned into flames at the 1KW level already when I used it at a high impedance point. 1 5/8" cable is rated for 32KW@30MHz permanent power; /archives//html/Amps/2012-07/msg00185.html (9,179 bytes)
4. Re: [Amps] corona on a quad (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Fri, 13 Jul 2012 05:17:28 -0700; "I doubt the corners of a quad would act like that as much if at all. Likely someone has some hard test data on this." As I recall, the quad was developed as a solution to corona discharge. HCJB is a; /archives//html/Amps/2012-07/msg00186.html (8,762 bytes)
5. Re: [Amps] corona on a quad (score: 1): Author: TexasRF@aol.com; Date: Fri, 13 Jul 2012 09:11:15 -0400 (EDT); Hi All, since the quad is made with full wavelength loops. the feed point can be selected to make the high voltage points midway between corners. That results in no sharp points at the highest voltag; /archives//html/Amps/2012-07/msg00188.html (7,541 bytes)
6. Re: [Amps] corona on a quad (score: 1): Author: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>; Date: Fri, 13 Jul 2012 13:52:30 +0000; Yes, Gerald is right. If you set your quad as diamond, you will get HV in both side corners. So, diamond configuration is not good for high power. Box or square configuration has the HV points in the; /archives//html/Amps/2012-07/msg00189.html (8,704 bytes)
7. Re: [Amps] corona on a quad (score: 1): Author: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>; Date: Fri, 13 Jul 2012 14:11:48 +0000; Hi Peter, I am not sure where you got that information but I think it is wrong. Here you can see the Andrew Heliax 1 5/8 LDF7-50A datasheet. there you can read: 30 MHz Average Power 30.86 Kw (Page 3); /archives//html/Amps/2012-07/msg00190.html (10,979 bytes)
8. Re: [Amps] corona on a quad (score: 1): Author: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>; Date: Fri, 13 Jul 2012 14:16:18 +0000; Sorry, the link for the datasheet; http://www.rfparts.com/pdf_docs/AndrewHeliax/LDF7-50a.pdf http://www.rfparts.com/pdf_docs/AndrewHeliax/LDF7-50a.pdf _______________________________________________; /archives//html/Amps/2012-07/msg00191.html (10,658 bytes)
9. [Amps] corona on a quad (score: 1): Author: Kathy Bookmiller <wb2aio@yahoo.com>; Date: Fri, 13 Jul 2012 08:02:32 -0700 (PDT); Years ago I built a 4 el quad using bamboo spreaders. Put it up in diamond configuration. Worked great but one day noticed my swr had gone bad, cranked it down for a look and saw the driven element h; /archives//html/Amps/2012-07/msg00192.html (8,555 bytes)

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