That's true--I have a homebrew 30/40, with the traps 24 ft from mast,
and the total length is 60 ft.
I started out building a 30M only, then decided it would be nice to have
another 40M antenna mounted 90 degrees from my 40M beam. Instant 90 deg
switching with a pushbutton switch, or run them both for a big footprint
on 40.
Had to try it when I found that adding 40M only required another 6 ft of
tube on each side of the 30M dipole.
73, K5YA
n4kg@juno.com wrote:
>
> AH, yes, a dipole that covers BOTH 30 and 40M gets a bit tricky.
>
> The usual trap isolator would require a FULL SIZE dipole on 30M
> which is ~50 ft plus extensions for 40M, making it nearly full size
> on 40M which is mechanically 'challenging'.
>
> I like the Cushcraft 40M elements over linear loaded elements.
> A CC D40 stacked with a D3W for the WARC bands might be
> a good solution.
>
> It should be fairly easy to modify another D40 to work as
> a stand alone 30M rotary dipole.
>
> Tom N4KG
>
> On Thu, 24 Oct 2002 Dave Pomeroy <dave@dpomeroy.com> writes:
> > Yes I was looking for a dipole that would be for 30 and 40 meters. I
> >
> > checked most of the major manfacturers and didn't find anything.
> > Thanks for the suggestions.
> >
> >
> > Dave Pomeroy K7DNP South East Washington
> >
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