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Re: [TowerTalk] SteppIR DB36/42 80m option

To: towertalk@contesting.com
Subject: Re: [TowerTalk] SteppIR DB36/42 80m option
From: Steve London <n2icarrl@gmail.com>
Reply-to: n2ic@arrl.net
Date: Sat, 17 Oct 2015 06:18:35 -0600
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
I have the DB36 with the dipole option at 91 ft, and an inverted V 80m dipole
with the feed point/ apex just below it at 89 feet. The end of the two legs of
the inverted v are at approximately 45ft above ground.

Yikes !

You almost certainly have severe interaction between the DB36 80 meter dipole and your inverted-vee. Check this: Start with the DB36 boom at right angles to the inverted-vee. Check the SWR. Now rotate the DB36 (without changing anything lengths on the DB36). Does the SWR change on the 80 meter DB36 ?

73,
Steve, N2IC
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