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Re: [TowerTalk] 43ft Vertical Feeding Question and Balun type

To: "Rob Atkinson" <>
Subject: Re: [TowerTalk] 43ft Vertical Feeding Question and Balun type
From: Terry Conboy <>
Date: Thu, 20 Nov 2008 16:44:04 -0800
List-post: <">>
At 03:23 PM 2008-11-20, Rob Atkinson k5uj wrote:
>Frank, Thanks; I get it now.
>>A 43 foot vertical is 5/8 wavelength on 20 meters.  With 
>>appropriate radial and
>>matching systems it can be an excellent antenna on 80 through 20 
>>meters, and a
>>fairly good antenna on 160 and 17 meters.
>>73 Frank W3LPL

Perhaps there is a question of semantics to say that a 0.08 
wavelength vertical, which has about a 2.5 ohm radiation resistance, 
qualifies as a "fairly good" antenna on 160m?

With a 5 ohm ground system, which is probably better than the average 
ham will install (something like 30-40 quarter-wave radials, 
depending on local ground parameters), 2/3rds of the transmitter 
power will be lost in the ground system (-4.8 dB).

It sounds like Frank wants less competition and QRM in the next 160m 
contest.  ;-)

73, Terry N6RY


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