HO-68 Audio 24December2009 1807z FM/BBS
An audio recording of the HO-68 pass over the far western USA 24Dec2009 1807z is on my webserver:
http://www.papays.com/HO-68_24Dec2009_180656z.mp3
The same scenario continues with packet competing with the voice repeater. How the two work together is not obvious but it does seem that the packet shuts down the voice repeater for a period of time. What makes the voice repeater start up again is not clear.
I decoded some packets on this pass. I have the TNC set to Date/Time stamp the packets so we know exactly when they were received. The clock is accurate to within a few seconds.
BJ1SA-12>BBSTAT [12/24/09 18:09:38]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:10:02]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:10:26]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:12:27]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:13:03]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:13:15]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:13:39]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:13:15]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:13:39]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:13:52]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:14:40]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:14:52]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:15:28]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:15:40]:Open BJ1SA-12:0 BJ1SA-12>BBSTAT [12/24/09 18:16:05]:Open BJ1SA-12:0 BJ1SA-12>WC7V [12/24/09 18:17:01]:°3K BJ1SA-12>BBSTAT [12/24/09 18:17:05]:Open BJ1SA-12:1 BJ1SA-12>BBSTAT [12/24/09 18:17:54]:Open BJ1SA-12:1
Thanks again to the Chinese Team for a wonderful Christmas present!
Merry Christmas.
73, John K8YSE
On 24 Dec 2009 at 14:52, John Papay wrote:
Date sent: Thu, 24 Dec 2009 14:52:48 -0500 From: John Papay john@papays.com Subject: [amsat-bb] HO-68 Audio 24December2009 1807z FM/BBS To: amsat-bb@amsat.org
An audio recording of the HO-68 pass over the far western USA 24Dec2009 1807z is on my webserver:
http://www.papays.com/HO-68_24Dec2009_180656z.mp3
The same scenario continues with packet competing with the voice repeater. How the two work together is not obvious but it does seem that the packet shuts down the voice repeater for a period of time. What makes the voice repeater start up again is not clear.
That's what i suspected at my first try. As soon as a packet signal is detected the TX shut off to restart with the ACK or command answer. There is a weird capture effect involved if an analog signal overwhelmed the digital one the digital retry sequences start until an ACK is received.
I cannot find any sources to confirm how things behave could be a commanding station can enlighten us?
"-"
Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE
participants (2)
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John Papay
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Luc Leblanc