[amsat-bb] Re: loop yagis

[Greg D.]

I need a good uplink antenna for the new birds, and have no real space on 
the boom to add a yagi.  This sounds like what I need; do you have any 
pictures?  Also, more details on how you do the filtering to keep from 
frying the 2.4 preamp!

I have a screen-lined grill dish, with a canned helix feed to a Khune 
preamp.  See:  http://home.jps.net/~gregd/Dsc00201.jpg.  Would I just put a 
single 1-wavelength loop around the outside of the helix at about the focal 
point?  That would be right at the front of the can...

Greg  KO6TH



----Original Message Follows----
From: "kc6uqh" <kc6uqh at cox.net>
Reply-To: kc6uqh <kc6uqh at cox.net>
To: <w7lrd at comcast.net>, <amsat-bb at amsat.org>
Subject: [amsat-bb] Re: loop yagis
Date: Sat, 5 May 2007 23:19:29 -0700

Bob,
For ATV I have used a Conifer BBQ grill type 2.4 GHz antenna with a Loop for
1.2 GHz in front of the 2.4 GHz feed. The 1.2 side has plenty of return
signal in the order of 18 dBi for ATV work. I haven't seen a loop yagi that
will touch it in performance. I run full duplex with filters on both
frequencies 1253.25 receive and 2441.5 transmit with 10 W. I am able to work
the W6ATN repeater from 40 + miles.

Art
KC6UQH
----- Original Message -----
From: <w7lrd at comcast.net>
To: <amsat-bb at amsat.org>
Sent: Saturday, May 05, 2007 4:13 PM
Subject: [amsat-bb] loop yagis


 > Hello
 > What is the consensus regarding loop yagi antennas for L band uplink.  I
 > have 10 watts available from an IC1271 before the coax.
 >
 > --
 > 73 Bob W7LRD
 > AMSAT member 28498
 > Seattle
 > _______________________________________________
 > Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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 >


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