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RE: AO-16 S-Band ON



Jim,
No, you have the antenna type wrong.  It is a 
bifilar helix.  It produces circular polarization with
two major lobes, one in the +Z direction and one in the
-Z direction.  Since we never made pattern measurements
I don't know how good the pattern is in the -Z direction.
This would occur in the southern hemisphere with this 
spacecraft. I'd be interested in getting any reports from
the southern hemisphere.  Glad to see the thing still works.
Jan

-----Original Message-----
From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
Behalf Of Jim White
Sent: Saturday, January 27, 2001 9:04 PM
To: Doug Braun NA1DB
Cc: Russell J. Platt, Jr.; amsat-bb@AMSAT.Org
Subject: Re: [amsat-bb] AO-16 S-Band ON


The S band antenna on AO-16 is a 1/4 wave whip sticking out the top (up 
when over the northern hemisphere).
Jim
wd0e@amsat.org

At 10:34 PM 01/27/2001 -0500, Doug Braun NA1DB wrote:
 >I heard it on the 8:30 PM EST pass.  It was pretty weak, though
 >with my 13-turn helix.  That plus the Doppler made it pointless
 >to even try to decode it.
 >
 >Does AO-16 have a RHCP antenna?  I thought that one of the hamsats
 >(UO-11?) had a LHCP S-band antenna...
 >
 >Doug
 >NA1DB
 >
 >At 04:33 PM 1/27/01 , you wrote:
 > >Yes 1200 baud PSK,  using KISS mode or TLMDC or PB or even old
 > >version of Procomm.  I left it on and will check it tonight.
 >
 >
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