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Re: [TowerTalk] Cutting a dipole

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Cutting a dipole
From: Jim Lux <jimlux@earthlink.net>
Date: Wed, 04 Sep 2013 20:42:47 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 9/4/13 3:32 PM, James Setzler wrote:
Greetings



I should know this but I've not made too many dipoles.



While it is hanging at 8 feet so I can get to it, I've cut a 40 m dipole to
the frequency I want.  When I raise the apex to 65 feet as an inverted V,
how will the resonance frequency change?


The resonant frequency will go higher, in general.

How much is impossible to say.

The easy way is to put a pulley at the top, haul it up, measure it, then bring it back down to shorten it.



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