[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

ao-7 vhf beacon report

Has anyone noticed the mode-B beacon is behaving in an interesting new way?

Just now (over NA 05:00Z today) I recorded it sending a repeating pattern that didn't seem to be CW, just a pattern of dits numbering 1 5 7 repeating over and over. The tone quality seemed very "hash", and varied in width somewhat gradually narrower and wider to about 75Hz a-la aurora.
I have heard this pattern before on a different occasion, but at the time i didn't know for sure if it was coming from Oscar-7.  This time I know for certain that it was coming from Oscar-7!  Also, that time, the sequence was playing-out very much faster than it was tonight, so fast that I could not make out the actual sequence, only that it was repeating, probably at least twice as fast as tonight.
Does this signal have any meaning, or is it just a glitch brought-on by so many years of radiation?

on an un-related note: I wonder how many hours the electronics have on them?  I doubt any modern satellite can ever touch the record-setting performance of this old one .  

As the old saying goes... they don't make 'em like they used-to!  To which I retort: why not?!?  We've learned so much, and yet evidently, so little....

Auke de Jong
Edmonton, AB

Sent via AMSAT-BB@amsat.org. 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