[NLRS] Halo/Big Wheel Antennas

Wed, 29 Jan 2003 18:54:49 -0600

Eric started trouble with this email thread.  I spent a couple of causal
hours surfing the web looking at pictures and build info because of him.  :)

I created some PDF docs of the better design information that I found. I
will try to get them posted up on my website in a few days.

They look pretty easy to build once you get a decent picture to model a
design from. The issue that I see with them is they that appear to be pretty
mechanically weak considering the size of each leaf. W0ZQ is correct on his
sizes for 2m..... each element is composed from 80 inches of  wire.

I suppose that someone could use some 8 or 10 gauge wire to make something
that is stiff enough to hold up.

I think that I am going to try to build one from 12 gauge wire and see how
it tunes. Depending on the results I will determine what changes to work
into the design.

I would like to come up with a template in Visio if this works any better
than a wet noodle or a simple loop.

73

JH

----- Original Message -----
From: "Jon Platt" <[email protected]>
To: "Eric Shook" <[email protected]>; "nlrs" <[email protected]>
Sent: Wednesday, January 29, 2003 6:38 PM
Subject: Re: [NLRS] Halo/Big Wheel Antennas

> Never built one, but played around with modeling on EZNEC.   I think the
2m
> version is pretty big as each "leaf" of the three leafs is a full
wavelength
> .... about 1/4 wavelength out, a half a wavelength in the outside bend,
then
> a quarter wavelength back in to the hub.   That's about 80" total per leaf
> on 2m, or something over 6 feet.   Should make mobiling a interesting
> experience.   May you should try building a 432 model first.   Good luck,
> looking forward to see them !
>
> 73, Jon
> W0ZQ
>
>
> ----- Original Message -----
> From: "Eric Shook" <[email protected]>
> To: "nlrs" <[email protected]>
> Sent: Monday, January 27, 2003 6:30 PM
> Subject: [NLRS] Halo/Big Wheel Antennas
>
>
> > Hello all,
> >
> > I was wondering if anyone had experience with building
> > halo or big wheel antennas for 2 meters and 432.  I
> > would like to build one especially for 432 and
> > possibly stacking them for extra gain.  I know that
> > they are not all that expensive, but any money saved
> > is extra transverter money!
> >
> > Thanks for the help,
> > -Eric KT8O
> >
> >
> >
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