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Topband: Inverted L vs Shorted 80 Meter Coax

To: <topband@contesting.com>
Subject: Topband: Inverted L vs Shorted 80 Meter Coax
From: <ku8e@bellsouth.net>
Date: Mon, 24 Jan 2005 16:12:18 -0500
List-post: <mailto:topband@contesting.com>
> 
> From: <ku8e@bellsouth.net>
> Date: 2005/01/24 Mon PM 04:07:41 EST
> To: <topband@contesting.com>
> CC: <ku8e@bellsouth.net>, <k4bai@worldnet.att.net>
> Subject: Inverted L vs Shorted 80 Meter Coax
> 
>   Hi All,
> 
>   I helped my friend John, K4BAI , try to improve his 160 meter antenna this 
> past weekend. In the past
>  he has been shorting the coax of his 80 meter inverted Vee, which the top is 
> about 50 ft up his tower and tuning it with his antenna tuner. He has no 
> ground system on this antenna.
> 
>  We put up an inverted L this weekend with about 55-60 ft vertical and the 
> feedpoint is about 8 ft off the
>  ground. The rest of the wire is sloping down at maybe a 45 degree angle.  I 
> put one fullsize 130 foot radial on it as a counterpoise. While this antenna 
> is probably still a compromise I would think it would work better than what 
> he had before. BTW, we are doing  no matching at the feedpoint... the wire 
> was trimmed starting at 130 ft and cutting some off to get a good SWR. Would 
> the antenna maybe work better if we put a 1:1 balun on it ???
> 
> He got on the air this weekend and says he is getting better reports on his 
> old antenna. The stations he worked were close in and I was thinking he might 
> try to work some DX and he will find the inverted L is better. Maybe the 80 
> meter shorted dipole is a "cloud burner" and that's why he got a better 
> reports on it ???  I'm sure adding more radials would improve the performance 
> of the L but he has limited space for more radials. Any suggestions ???
> 
>                           Jeff  KU8E
> 
> 
> 
> 


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