Sounds like a good plan Tom.
Is the BOOM strong enough to support the additional
wind and weight load of the 30M elements?
A 30M antenna interlaced inside a 40M beam 'should' have
little or no effect on the 40M antenna. The 40M antenna 'may'
affect the 30M beam. Since he DE's are insulated split dipoles,
you could play with the termination of the unused feedlines
(open, short, change lengths) to see if you can find a termination
that minimizes any interactions.
Tom N4KG
On Wed, 20 Nov 2002 22:51:36 EST TNeill1648@aol.com writes:
> I am currently installing another Rohn 55 tower which will be 100
> feet high
> with a 12 foot heavy duty mast sticking out. My plans are to
> install a
> multi-band beam for 40 & 30 meters on top. I can only find two
> sources for a
> commercially made duo-bander beam that covers 40 & 30 meters and
> that is
> Force 12 and M2. Does anyone have any experience with these
> products or know
> of another source? My present 40 meter beam is the Cushcraft 2
> element yagi
> that works well. Would it be possible to interface two elements for
> 30
> meters, using elements from a Cushcraft 402 modified for 30 meters,
> with the
> Cushcraft 402? Any thoughts or suggestions would be appreciated.
> Many
> thanks.
>
> Tom Neill K4XG
> Windy Hills Farm
>
> College Grove, TN 37046
>
> _______________________________________________
> AN Wireless Self Supporting Towers at discounted prices,
> See http://www.mscomputer.com
>
> Wireless Weather Stations now $349.95. Call Toll Free,
> 888-333-9041 for additional information.
> _______________________________________________
> Towertalk mailing list
> Towertalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
________________________________________________________________
Sign Up for Juno Platinum Internet Access Today
Only $9.95 per month!
Visit www.juno.com
|