[TowerTalk] 160 meter odditiy

john at kk9a.com john at kk9a.com
Wed Jan 7 07:44:27 EST 2015


This is too small of a diameter change to notice any frequency difference.

John KK9A


To:	"Tower and HF antenna construction topics." <towertalk at contesting.com>
Subject:	Re: [TowerTalk] 160 meter odditiy
From:	"Ron W8RJL" <youngron at verizon.net>
Date:	Tue, 06 Jan 2015 23:04:08 -0500

As noted in the handbook, K factor is important for antennas above 30 MHz
especially when using rod or tube for elements but any change in diameter
will have an impact even at 160 meters. I have made cage dipoles for 80
meters and the old tried and true 468/f in MHz does not work due to the K
factor. Agreed going from from 0.080 to 0.128 is a small change but you
can't say it is to small to make a difference. I still say prune the
antenna and don't worry about it.

Ron W8RJL

----- Original Message ----- From: <john at kk9a.com>
To: <towertalk at contesting.com>
Sent: Tuesday, January 06, 2015 9:08 PM
Subject: Re: [TowerTalk] 160 meter odditiy


#12 wire is 0.080", #8 is 0.128.  This is not a big enough diameter change
to make a difference.

John KK9A



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