Hi Terry,
I would keep the same ratio of element to coil to tip
as it is on 40m. IOW, slide all the sections of each element
in until your at resonance with the driven element with the
coil in the same relative position. On the reflector, make it the
same percentage larger as it is on 40m.
You may burn up your coils if they are at the element end.
GL!
Phil, K5PC
-----Original Message-----
From: N6CW@aol.com <N6CW@aol.com>
To: towertalk@contesting.com <towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: Wednesday, September 22, 1999 11:06 AM
Subject: Re: [TowerTalk] CC D40 on 30. Try 1
>
>In a message dated 9/20/99 5:37:51 AM Pacific Daylight Time,
>philk5pc@tyler.net writes:
>
><<
> It appears to me that you would have a stronger, better looking
> antenna by using the loading coils ad they were intended, removing
> the hats, and sliding the elements in to each other until resonance
> in obtained. Just MHO. >>
>
>What a coincidence. Yesterday I had assembled a D40 and was trying to decide
>whether to put it on 40 or 30 meters. Then I see this discussion on the
>reflector. I have decided to put it up for 30 meters and was wondering which
>would be the preferred method of shortening the antenna. From my rough
>calculations, going from 40 to 30 meters and using the loading coils in the
>system, it would need to be about 32 feet long. The question is where should
>the 6 feet on both sides be taken from? If I removed the end pieces which
>attach to the loading coil it would get me there. But is this the best or
>worst place to do it? It would be the easiest. Should the end pieces be
>shortened halfway and the rest taken in the middle? I would think it would be
>best to keep as much as the antenna before the coils as possible but what
>effect would having the coils at the end do?
>
>Any suggestions?
>
>Terry/N6CW
>
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>
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