Fw: [Sumbandila: 236] SO-67 recordings North America 05-06Dec2009

[woz...@gmail.com]

FYI
Hans
----- Original Message -----
From: "John Papay" <jo...@papays.com>
To: <amsa...@amsat.org>
Sent: Sunday, December 06, 2009 11:44 PM
Subject: [Sumbandila: 236] SO-67 recordings North America 05-06Dec2009


> The SO-67 recordings from 05 and 06 December are
> on my webserver:
>
> http://www.papays.com/SO-67_05Dec2009_125403z.mp3
> This pass was only 1 degree so it is short. But you can
> get an idea of how strong this satellite is, even at low
> elevations. East is not a good direction for me but SO-67
> burns its way through the trees.
>
> http://www.papays.com/SO-67_05Dec2009_142508z.mp3
> This is a 54 degree pass. The time stamp on the audio files
> are not necessarily the beginning of the audio clip. That's
> because my recorder turns on at AOS and SO-67 is not turned
> on for 1-2 minutes after I can see it. Therefore I have
> deleted the beginning of the audio file because it only contains
> noise.
>
> http://www.papays.com/SO-67_05Dec2009_155930z.mp3
> This was a 10 degree western pass for me.
>
> http://www.papays.com/SO-67_06Dec2009_140452z.mp3
> This was a 28 degree eastern pass for me.
>
> http://www.papays.com/SO-67_06Dec2009_153840z.mp3
> This was a 17 degree western pass for me. I was not
> at home during this pass.
>
> SO-67 continues to be difficult to work for some because
> of not adjusting for the particular operating parameters
> of this bird, especially the 3 second tail timer. Once
> you learn to take this into account, the bird is easier to
> work. Full duplex makes it much easier to work this bird
> since you can determine when you are in or out. You can
> hear an example by listening to VE2DWE. He transmits during
> the tail, but since he is full duplex he knows when the
> transmitter goes off and he unkeys and then keys and continues
> with his exchange.
>
> SO-67 is in virtually continuous use when over North America.
> If it is possible to change the way it operates, it would be
> best for it to have the transmitter on continuously over
> North America (based on a schedule) with no "tail," similar
> to how AO-27 operates. It would not stress the transmitter
> as much since it would not be constantly going on and off.
>
> I have included another audio file taken from AO-27, 6December2009
> at 2031z. AO-27 is on for 7 minutes over North America with the
> transmitter on continuously, no CTCSS required for access. If
> you work this bird it pays to watch the clock to see when the end
> of the pass is eminent. I use a software timer and start it when
> the data goes off at the beginning of the pass. If someone calls
> you at the end of the 7 minute period, you know how long you have
> to respond. No sense in being surprised.
>
> http://www.papays.com/AO-27_06Dec2009_203103z.mp3
>
> 73,
> John K8YSE EN91dh
>