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Re: 2.4 GHz Helix & static type noise



Thanks for the info. It has been hard to get any exact info on the posistioning
of the feed point. I want to give the 60cm dish idea a try and see how it
compares to the Bar-B-Q grill I use now.

Geoff Taurins wrote:

> G'day Bill ( and all others ). Well the position of the feed is an
> interesting one. I asked LOTS of people and the most given answer for feed
> point location was at the end of the first turn of the helix ( working from
> the feedpoint ). I have no idea weather this is right or wrong but it worked
> for me. I tried with the focal point at the helix reflector, 1st turn, 2nd
> turn and everywhere in between, on receive I could not tell any difference,
> in the finnish I used the first turn at focus and left it at that.
>
> Cheers Geoff VK3JDG
>
> ----- Original Message -----
> From: "Bill Hurlock" <bill@hurlock.net>
> To: "Geoff Taurins" <geofft@bigpond.net.au>
> Sent: Wednesday, February 28, 2001 2:29 AM
> Subject: Re: [amsat-bb] 2.4 GHz Helix & static type noise
>
> > I have question on the Helix feed. Where do you put the helix in relation
> to the
> > focal point of the dish? i.e. Is the reflector at focus or are the turns
> at
> > focus?

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