As W7LRD observed, AO-7 did not go to mode B as expected earlier today. As of 0100 March 1, it was still in mode A (with signals in the 10m downlink weak) and the 70cm beacon is on at 435.100 with a good signal.
W8IJ Dave Barrows
AO-7 actually has 2 more modes, C & D...C is "low power" B ahd D is 430 "Beacon only"...
In defference to the "missing" Emily...I found the following post in the archives:
Emily Clarke wrote:
I had run some numbers this past weekend and it predicted that AO-7 would go out of eclipse, and sure enough it did. On Jan 11 at 09:38 F6BYJ reported that AO-7 was in Mode A, and since that time no Mode B contacts have been made.
The original theory was that AO-7 progresses from Mode B to Mode C, then to Mode A when power drops. However generally this would only last for one orbit since it would resent when it entered eclipse.
Now that the orbit has precessed (in relationship with the grey line) to the point it won't go into eclipse, it doesn't appear it will be reset by lack of sunlight. This condition will persist until approximately the 10th of March 2006.
It will be very interesting to see if AO-7's mode changes during this time. If you find AO-7 in Modes B or C, please be sure to log your contacts in the AO-7 log at: http://www.emilyshouse.com/experthams/ao7/index.html
Roger WA1KAT
----- Original Message ----- From: dobarrows@aol.com To: amsat-bb@amsat.org Sent: Saturday, February 28, 2009 8:18 PM Subject: [amsat-bb] Re: AO-7
As W7LRD observed, AO-7 did not go to mode B as expected earlier today. As of 0100 March 1, it was still in mode A (with signals in the 10m downlink weak) and the 70cm beacon is on at 435.100 with a good signal.
W8IJ Dave Barrows
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dobarrows＠aol.com -
Roger Kolakowski