[amsat-bb] Re: S band downlink - AO-51

Gould Smith gouldsmi at bellsouth.net
Mon Mar 16 17:20:00 PDT 2009

Michael and BB,

Lou McFadin showed me a photograph a year or so ago of the S-band output 
measured before launch, and it showed 1.2W out.

The antenna is a 1.2 GHz antenna tuned to also operate on 2.4 GHz, about 2-3 
inches tall.

There is quite a bit of path loss at 2.4 GHz, but I imagine you have a good 
preamp very close to the antenna.

Gould, WA4SXM
----- Original Message ----- 
From: "Michael Heim" <kd0ar at sbcglobal.net>
To: <AMSAT-BB at amsat.org>
Sent: Monday, March 16, 2009 6:58 PM
Subject: [amsat-bb] S band downlink - AO-51

> Worked VE3NPC on AO-51 V/s just now.  We had the transponder totally to 
> ourselves, and had a nice little chat.  I was on this morning around 7:30, 
> by myself.  We have V/s all week.  This is my favorite configuration, the 
> signals are a LOT stronger on 2401.2 then on 70cm.
> What is the TPO and antenna on S band on AO-51?
> Such good conditions,  I hope to hear you on!!
> Michael Heim
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