Hi Alan,
Well I have just had a pass over ZL with only one other station on and the performance was quite interesting and repeatable. When the transponder is triggered it stays on and does not drop out. Once the transponder is released it has a few seconds of tail. Every attempt to retrigger the transponder during the tail resulted in a drop-out of two or three seconds. If you wait until the tail drops out it will retrigger as normal and hold in without a problem. In other words if I drop my carrier the transponder seems to enter its "tail mode". If the second station begins transmitting within this tail the transponder ignores that signal and still drops out. If the second station waits for the tail to drop and then starts transmitting the transponder holds in without drop-out.
73 Alan ZL2BX
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Alan P. Biddle Sent: Saturday, 14 November 2009 16:14 To: AMSAT-BB Subject: [amsat-bb] Re: SO-67 14Nov2009 1521z Audio
Thanks John,
It would be very interesting to hear from other parts of the world where only 1-2 stations are on whether the dropouts are similar. That would help clarify the situation. SO-50 has similar dropouts, and AO-51 did as well when the PL access was enabled.
Alan WA4SCA
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Papay Sent: 14 November, 2009 09:45 To: [email protected] Subject: [amsat-bb] SO-67 14Nov2009 1521z Audio
The central USA pass was much like the eastern pass. Signals from the satellite were very strong. Audio was very loud, even on the wideband rx setting on the TS2000. Audio cut off after a few seconds of transmission was prevalent. It seems that it took several seconds for the audio to come back when this happened. Lots of stations on the bird including KC8ZFN, KD8CAO, WB8OTH, WC7V, WA4NVM, KB1RVT, WA4SCA, KB0RZD, N5AFV, WD9EWK, N5UXT, WB2IOL, KF9L, AA5PK and others. The bird went over the horizon before it turned off.
http://www.papays.com/SO-67_14Nov2009_152116z.mp3
The next Western USA pass is not visible in Cleveland.
73, John K8YSE EN91dh
John Papay [email protected]
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_______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb