I have heard much debate about verticals having low gain.  It would seem to
me that the biggest loss is do to a vertical that is being received by a
horizontal and vice versa.
Mark WZ0K
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----- Original Message -----
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, December 28, 2005 5:44 PM
Subject: Re: antenna building


>I would imagine that the helically wound antenna would be much like a
> quarter wave yes, something around a 25 degree angle of radiation.
> Not terribly great for dx on 20, but not bad for north America wide or
> even
> the closer in ground wave stuff.
> Perhaps a better pursuit would be to try for a 40M antenna helically
> wound.
> Of course one would have to use a bigger sized pvc pipe to get better
> results and band width.
> I wonder if loaded radials would be a compromise or not?
> For effective radials on a 40M vertically, one would have to have at least
> four 30 foot long wires...if one wound a coil of about 20 feet and then
> had
> a 10 foot peace of straight wire going out from the base of the vertical
> peace, I wonder if this would work as well as a straight run of 30 feet.
> I suppose the whole point of a counter poise is to try and make something
> that the wave can reflect off of, and that would have to be a quarter wave
> long, not partially coils...the effective length has to be divisables or
> multiples of that radiated wave length I would think.
> 73
> Colin, V A6BKX
>