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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+1\/2\s+wave\s+inv\s+L\s*$/: 12 ]

Total 12 documents matching your query.

1. Topband: 1/2 wave inv L (score: 1)
Author: Art Snapper <art@nk8x.net>
Date: Sun, 15 Feb 2015 17:35:33 -0500
I have been researching the inverted L for 160, and have received much helpful information. - Thanks! Today I stumbled across a document regarding the 1/2 wave inverted L. Has anyone done a side-by-s
/archives//html/Topband/2015-02/msg00474.html (6,958 bytes)

2. Re: Topband: 1/2 wave inv L (score: 1)
Author: "Richard (Rick) Karlquist" <richard@karlquist.com>
Date: Sun, 15 Feb 2015 14:52:44 -0800
Today I stumbled across a document regarding the 1/2 wave inverted L. Has anyone done a side-by-side comparison? Art NK8X _________________ I have modeled it and the results are predictable. About ha
/archives//html/Topband/2015-02/msg00475.html (7,401 bytes)

3. Re: Topband: 1/2 wave inv L (score: 1)
Author: Art Snapper <art@nk8x.net>
Date: Sun, 15 Feb 2015 18:12:27 -0500
Here is a link to the document. http://www.mfjenterprises.com/antennatalk7.php There is very little information, but don't recall seeing seeing the 1/2 wave L in my antenna books. Art _______________
/archives//html/Topband/2015-02/msg00476.html (7,991 bytes)

4. Re: Topband: 1/2 wave inv L (score: 1)
Author: Guy Olinger K2AV <k2av.guy@gmail.com>
Date: Sun, 18 Feb 2018 16:03:11 -0500
If one is not talking about ham implementations of the commercial AM BC paradigm and their big verticals over very well done dense radial fields, the models can do quite poorly. Go ask W7EL. But then
/archives//html/Topband/2018-02/msg00108.html (11,272 bytes)

5. Topband: 1/2 wave inv L (score: 1)
Author: "Roger Kennedy" <roger@wessexproductions.co.uk>
Date: Sun, 18 Feb 2018 17:55:05 -0500
Many years ago, a friend of mine used to operate on 160m with vertical antennas suspended on a big Weather Balloon filled with hydrogen . . . After using Quarter-wave verticals for a few months, he c
/archives//html/Topband/2018-02/msg00109.html (6,514 bytes)

6. Re: Topband: 1/2 wave inv L (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sun, 18 Feb 2018 17:31:13 -0600
Yup! The lack of a radial system explains why the 1/2w vertical worked better. :-) 73, Mike www.w0btu.com Many years ago, a friend of mine used to operate on 160m with vertical antennas suspended on
/archives//html/Topband/2018-02/msg00110.html (7,718 bytes)

7. Re: Topband: 1/2 wave inv L (score: 1)
Author: Charles Moizeau <w2sh@msn.com>
Date: Sun, 18 Feb 2018 23:42:35 +0000
Years ago I tried a a weather balloon filled with hydrogen from a hired canister. The balloon's spherical shape made it highly susceptible to being disturbed by even a fairly mild breeze. In my case
/archives//html/Topband/2018-02/msg00111.html (9,528 bytes)

8. Re: Topband: 1/2 wave inv L (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sun, 18 Feb 2018 17:50:44 -0600
Save yourself some wire, and either search back through the Topband archives or model your very tall vertical. :-) Basically, it'll waste a lot of RF at unwanted high angles. 73, Mike www.w0btu.com .
/archives//html/Topband/2018-02/msg00112.html (7,697 bytes)

9. Re: Topband: 1/2 wave inv L (score: 1)
Author: Charles Moizeau <w2sh@msn.com>
Date: Sun, 18 Feb 2018 23:56:16 +0000
Well it is understandable. The current maximum in the half-wave antenna is lifted well above ground level. Had there been a radial system it would have had to employ very long radials, for most of th
/archives//html/Topband/2018-02/msg00113.html (9,644 bytes)

10. Re: Topband: 1/2 wave inv L (score: 1)
Author: Mark K3MSB <mark.k3msb@gmail.com>
Date: Sun, 18 Feb 2018 19:40:40 -0500
I've read that the minimum lengths for ground radials is no shorter than the height of the antenna and that 50% of ground losses occur in the first one-quarter wavelength distance from the antenna. T
/archives//html/Topband/2018-02/msg00114.html (10,539 bytes)

11. Re: Topband: 1/2 wave inv L (score: 1)
Author: Charles Moizeau <w2sh@msn.com>
Date: Mon, 19 Feb 2018 03:14:43 +0000
That is probably true but ONLY for an antenna that is 0.25 wavelength high where the current maximum is at the base feedpoint, right where those radials, also the same 0.25 wavelength in their length
/archives//html/Topband/2018-02/msg00115.html (12,541 bytes)

12. Re: Topband: 1/2 wave inv L (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 19 Feb 2018 12:16:17 -0600
A 180 or 190 degree vertical radiator presents a few different problems compared to one 90 degrees long, due to the high voltage at the feedpoint. You can have ground loss there, but since it is more
/archives//html/Topband/2018-02/msg00123.html (7,757 bytes)

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