[TowerTalk] Shorty 40

[Ron Chambers]

This weekend or maybe next, we (N5QQ/W5WW) should have Dave Leeson's 2 elem
40m MOXON up and running. Will offer our comments afterwards. K5MR got his
up a few months back and seems to be pleased, well, until the lightning
storm fried his rotor!

More later...

Ron
N5QQ


On 10/17/07, David Gilbert <xdavid at cis-broadband.com> wrote:
>
>
>
> Force 12's own website says their more recent coil-loaded Delta 240 is
> intended to replace the older linear loaded EF-240S, their explanation
> being:
>
> "The most difficult aspect of the antenna was tuning the elements to the
> proper frequencies for maximum performance.  This is because the linear
> loading had variances during assembly."    see
> http://force12inc.com/F12-Delta-240-140-Info-1.htm
>
> Several reviews on eHam.net additionally report problems with the stiff
> Alum-O-Weld loading wires/**/ breaking, so I suspect that also had some
> impact on F12's decision to create the Delta 240.  In theory, the Delta
> 240 is similar to the OptiBeam OB2-40 (the choice I made as well), but
> the Delta 240 elements are a bit shorter and I'm sure the OptiBeam is
> more ruggedly built.
>
> Dave   AB7E
>
>
>
> john at kk9a.com wrote:
> > I'm not sure that linear loading is as efficient as some manufactures
> claim
> > and some models require a lot of adjusting of the linear loading wires
> for
> > the antenna to perform properly.  I personally prefer a loading coil and
> > when looking for a small 2el beam for P40A, I choose the OptiBeam
> OB2-40.
> > The coils are massive, the antenna is well constructed and easy to put
> > together.   My second choice (actually first choice if budget ruled out
> the
> > OptiBeam) would be the Cushcraft XM240.
> >
> > John KK9A
> >
> >
> >
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>