[TowerTalk] Wilson 5 element 20 meter monobander

[Ted Bryant]

Tim and Jim are correct. A 40-ft boom on 20M is a little short for five
elements. However, someone once said that sometimes you just gotta use what
you got. So, if you have a fairly recent copy of the ARRL Antenna Handbook,
there is a design shown in the chapter on HF yagis for a 5-element, 20 meter
yagi on a 40-foot boom (520-40.yag on the CD that comes with the handbook).
There is also a similar design that comes with K6STI's YO software.

73,Ted w4nz


> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com]On Behalf Of Tim Duffy K3LR
> Sent: Saturday, October 09, 2004 1:50 PM
> To: EL34GUY at aol.com
> Cc: towertalk at contesting.com
> Subject: Re: [TowerTalk] Wilson 5 element 20 meter monobander
>
>
> Hi Mark!
>
> I had a brand new one of these in 1979. Its factory dimension
> performance was horrible. I was attending college at the time and
> thanks to hundreds of key punch cards I was able to model on
> the mainframe computers (optimizers were only a dream in the
> public sector) a 56 ft boom design which worked much better with
> 5 elements. As Jim, SM2EKM (He visited me about the time I
> extended the boom in 1980) pointed out, 5 elements on 40 ft boom
> is one element to many for that boom length.
>
> 73!
> Tim K3LR
>
> EL34GUY at aol.com wrote:
>
> > Hello,
> >
> > Does anyone have any experience with the large 3 inch 40ft boom Wison
> > monobander for 20 meters? Im wondering how well it works and if
> it was  reoptimized
> > and what the new spacings might be? 73
> >
> > Mark
> > W0NCL
> > _______________________________________________