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Re: Topband: 5/16 vs 1/4 wave length inverted L

To: tzikas tzik <tzitzikas77@gmail.com>
Subject: Re: Topband: 5/16 vs 1/4 wave length inverted L
From: Guy Olinger K2AV <olinger@bellsouth.net>
Date: Mon, 26 Jul 2010 13:01:35 -0400
List-post: <topband@contesting.com">mailto:topband@contesting.com>
There is very little difference in the pattern of a 5/16 inverted L
and 1/4 inverted L that has the bend to horizontal at the same height,
assuming a bend even roughly half way.  The lower the bend the higher
the maximum lobe takeoff, but it's a mild change.   29 degrees vs. 49
degrees is not correct, all other issues held constant.

73, Guy.

On Sun, Jul 25, 2010 at 11:49 AM, tzikas tzik <tzitzikas77@gmail.com> wrote:
> Hi. I have a transmitter for 160m band about 200-300w r.f output power. Now
> i am using an (5/16)X(wave length) inverted L. I am looking for an antenna
> which will provide strong local signal. I have read that the 5/16 inverted L
> has about 49o elevation angle and the 1/4 inverted L has about 26o elevation
> angle. So, i think that 1/4 inverted L, provide more strong local signal.
> what do you think about this?
> Now with 5/16 inverted L it very easy to match it with the 50ohm transmitter
> by using only a series variable capacitor. I am afraid that with 1/4
> inverted L it will be more difficult to match it with the transmitter. What
> i need (coils and capacitors) to match it? thank you very much
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK

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