[UK-CONTEST] 20m vertical

[James Thresher]

This was a 1/4 wave vertical with 4 radials, and another slightly larger 1/4 vertical (not driven in any way) acting as a reflector, again with 4 radials, they were about a 1/4 wave apart. It wasn't just a vertical yagi ;) It was built for 40m so it was quite large, the modelling suggested pretty good gain figures. We had planned to build a 4 or 5 element version for SSB Field day this year but decided against it in the end. Not sure how you would even get the 2 element version rotating on a mast complete with radials.

73

-----Original Message-----
From: uk-contest-bounces at contesting.com [mailto:uk-contest-bounces at contesting.com] On Behalf Of Ian Maude
Sent: 12 November 2008 15:53
To: UK-Contest
Subject: Re: [UK-CONTEST] 20m vertical

James Thresher wrote:
>
> We've actually played around with these, a couple of the others in our club built one the other year for 40m, they had pretty good results with it. The big disadvantage of course is that you can't rotate it.
>
Why ever not?  If you mount it as ours was on 1 mast, it rotates easily :)

73 Ian

--

Ian J Maude, G0VGS
SysOp GB7MBC DX Cluster
Member RSGB, GQRP
K2 #4044 |K3 #455
http://www.amateurradiotraining.org

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