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[TowerTalk] 40 M Rotatable Dipole above Quad

To: <>
Subject: [TowerTalk] 40 M Rotatable Dipole above Quad
From: "Craig Sande" <>
Reply-to: Craig Sande <>
Date: Sun, 23 May 2004 14:43:07 -0700
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I am installing a 70 foot crank-up tower and would like to install a Lightning 
Bolt 4-element 5-band quad with a 6 meter add-on.  This should provide nice 
performance on 20-6.  In addition, I would still love to have a rotatable 
dipole for 40 meters. 

I've read through the archives and have noted where others have mounted their 
rotatable dipole on the quad's boom, but then it interacted with 15 M.  Others 
were considering placement of the rotatable dipole above the quad parallel to 
the quad's boom, but I didn't see any followup messages about performance.  I 
would expect the rotatable dipole's performance might decrease due to 
interaction with the quad's boom.  As long as it wasn't a major compromise, I 
would lean this direction.  I was going to use a 20 foot mast with the quad 
mounted at the top of the tower and the rotatable dipole mounted about 14-15 
feet above the top of the tower (this would be 5-6 feet above the highest 
element of the quad).  I'm not sure if this makes sense or not as I don't have 
much experience with such antennas (yet).

Does anyone have advice for me on a way to keep both a quad beam and a 40 meter 
rotatable dipole on the same crank-up tower?



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