[Top] [All Lists]

Re: [TowerTalk] Will Resonance Go Up or Down?

To: "Doug Rehman" <>, <>
Subject: Re: [TowerTalk] Will Resonance Go Up or Down?
Date: Tue, 14 Mar 2006 00:29:33 +0000
List-post: <>

     The resonant freq should INCREASE, but by how much is anyone's guess.  
However, I, too, have a D40 and found that its resonant freq and BW were 
exactly according to specs in the assembly manual.  Check the lengths of the 
various element components against the manual (paper or on-line) if you have 
forgotten them and then verify the resonant freq from the table that's included 
with the instructions.

73 de
Gene Smar  AD3F

 -------------- Original message ----------------------
From: "Doug Rehman" <>
> I've got a CushCraft D40 rotatable dipole mounted on my tower's mast. At
> present, the tower is laying over horizontally. The D40 is about 6' off the
> ground.
> It is resonant at about 7035 with about 220 KHz between 2:1 SWR points. When
> I raise the tower to vertical and extend it, thus raising the dipole to
> around 66', should the resonant frequency shift upward or downward? Any idea
> how far?
> Tnx,
> Doug
> _______________________________________________
> _______________________________________________
> TowerTalk mailing list


TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>