[amsat-bb] Re: AO-51 V/S

6 Jan 2009

      Put the downconverter RIGHT at the antenna feedpoint. Any coax between the 
dish feed and the downconverter or preamp is usually disastrous.
Good Luck!
73, Drew
----- Original Message ----- 
From: "Greg Dober" almetco@comcast.net
To: amsat-bb@amsat.org
Sent: Monday, January 05, 2009 8:25 PM
Subject: [amsat-bb] Re: AO-51 V/S
...
I had a problem hearing the pass.  I see I made it into the bird.  I used a
grid parabolic 23.5 x 39.25 x 15 inches with a keps.it 
downconvertor/preamp.
I could hear some stations fading in and out, but just wasn't strong 
enough
to hear them all or myself.
That antenna seemed to work well for AO-40, but seemed light on this try.
Next good pass, switching to a 17 turn Directive System circular
polarization antenna.  Seeing if my receive will be better for AO-51
Any opinions on the grid vs. cp?
Greg
N3MVF
-----Original Message-----
From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On
Behalf Of Andrew Glasbrenner
Sent: Monday, January 05, 2009 7:48 PM
To: amsat-bb@amsat.org
Subject: [amsat-bb] AO-51 V/S
Heard this evening so far on V/S:
VE3NPC
KB1RNI
N3MVF
AJ8P
KC9ELU
AK5V
I made an interesting recording of the S band transmitter last pass with
WinRad and my SDR-IQ. The signal peaks about 45 db above the noise! This 
is
with a 3 ft dish with a patch feed, preamp at the feed, and keps.it
downconverter to a hamtronics converter to the -IQ.
I'll make the recording available to anyone who'd like it, and the 
software
to play it is available for free at http://www.winrad.org/ . The catch is 
it
is about 530Mb. Maybe someone has a website they would put it on? 
Otherwise
if you want it, send me a SASE and blank CD or DVD and I'll make a copy 
for
you.
73, Drew KO4MA

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