--- In topband-helical@..., "Jeff Kinzli N6GQ"
<jeff@...> wrote:
>
> Hey gents,
>
> I've been thinking of building some helical dipoles, and using them
as
> vertical dipoles, and if that works out, then taking a few of them
and
> phasing them into a 4-square arrangement.
>
> I wonder, my guess is that the tighter the helix, the less gain I'd
> see under a full-size dipole. I also understand that I'd need more
> wire than the traditional dipole formula calls for (468/f).
>
> Sorry if this seems like a stupid question, I'm just now looking for
> materials and simulations of this but haven't found anything on the
> web yet.
>
> Anyone try this? I've used vertical dipoles on 40M and they work
quite
> well, even without any radials.
>
> 73,
>
> Jeff N6GQ
>
Hi Jeff,
thanks for your interest in the group. Sorry I can't
answer your question as I never tried anything like this before. Also
I don't have that sort of room for antennas. My garden is 50 foot
wide & 65 foot long. I also have 20 foot to the front of my house.
Biggest antenna here is an 80m Windom which just fits in.
If you do try the arrangement you mention, please call back in
this group & let us know the results.
Regards,
Phil.
M0VEY East Yorkshire England.