Sent: Sunday, November 21, 2010 7:04 AM FASTRAC 1 90025U 0 10324.91941279 +.00047321 +00000-0 +66105-2

0 00053

2 90025 071.9688 138.3615 0022609 310.2956 049.6065

14.77203256000130

For those that do seat-of-the-pants tracking from your mobile....

FASTRAC's orbit (the center of general pass times over your area) generally moves about 18 minutes earlier every day. But where it is in that orbit is not an exact multiple of that.

So for a good overhead pass on any given day, tomorrows similar pass will actually be about 20 minutes LATER each day, but a lower pass. Then after two days, jump back 80 minutes to get back onto the peak pass. So you can go +20, +20, then -80 then +20, +20 then -80 etc..

I found this useful for portable operation on a long vacation for estimateing tomorrows pass based on when I heard the packets each day.

Bob, WB4APR