Re: [amsat-bb] 2.4 GHz Helix & static type noise

["Geoff Taurins" <geofft@xxxxxxxxxxxxxx>]

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?


----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org