[amsat-bb] Re: AO-27 Question

[Luc Leblanc]

On 27 Jun 2009 at 22:50, Jim Jerzycke wrote:

> Hi, everybody.
> Today at Field Day was the first time I tried to work AO-27, and succeeded. One thing I noticed, is that as the satellite came up over the horizon, I wasn't hearing anything until what sounded like a long data burst happened. Then I heard the sat come alive, with what sounded like people already in QSO. As the sat progressed, I heard a lot of operators, then the long data burst happened again, and it seemed like the sat went "dead" I know a bit about how it's scheduled (TOPR), but since this is the first time I was able to hear it well enough to actually consider it usable.
> What's the data burst? Is it part of the TOPR, or am I hearing something else?
> 73, Jim  KQ6EA

AO-27 alternate between analog and telemetry date session see below and check their web site at http://www.ao27.org/AO27/index.shtml


Current Time UTC => Sun Jun 28 10:58:47 2009
Schedule Time    => 00:51:32
Current State    => 7
         Mode    => OFF
       Remaining => 00:49:16

Next Event   UTC => Sun Jun 28 11:48:03 2009
        State    => 0
         Mode    => Digital Med

TOPR Epoch      (UTC) = Sat Jun 13 18:58:13 2009
TOPR Epoch    (ctime) = 1244919493
Schedule Period (sec) = 6048.524

State  Start Time  End Time  Duration(sec)  Mode
--------------------------------------------------------
  0     00:00:00   00:00:20       20        Digital Med
  1     00:00:20   00:07:20      420        Analogue Med
  2     00:07:20   00:08:20       60        Digital Med
  3     00:08:20   00:32:01     1421        OFF
  4     00:32:01   00:33:01       60        OFF
  5     00:33:01   00:33:21       20        OFF
  6     00:33:21   00:33:41       20        OFF
  7     00:33:41   01:40:48     4027        OFF

"-"


Luc Leblanc VE2DWE
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