I hope that David takes the plunge and joins AMSAT!
David, if you're reading this blog, it was a pleasure to work you. We've all been there and had the thrill of that first contact on satellite.
I am pleased to announce that I will be sponsoring a new award to promote
activity on AO-73 (FUNcube-1). The requirements for this award are simple:
1. Work 73 unique stations on AO-73.
2. Contacts must be made on or after September 1, 2014.
3. There are no geographic restrictions on your operating location.
There will be no cost for this award (donations to AMSAT-UK and AMSAT-NA's
Fox program are encouraged though). No QSLs are required. When you complete
the requirements, email your log extract including the callsign of each
station worked, UTC, and date to n8hm at arrl.net as well as the address where
you'd like the award certificate sent.
Enjoy AO-73's transponder!
Paul Stoetzer, N8HMI hope that some of my readers will not only take up the challenge but make donations to AMSAT-UK or AMSAT-NA (preferably both) to support ongoing and future satellite projects.
Actually, using simple pass-times, it is possible to predict with a simple
pencil, all future pass times for several weeks.
Every satelite REPEATs their daily ground track every few days or so.
AO51 repeated every 5 days, and GO32 every 9. These were sun synchronous
and so not only the ground track repeated but the time of the passes
repeated as well.
See the examples on: http://aprs.org/MobileLEOtracking.html
The ISS is not sun synchronous, but these three rules will predict future
ISS passes without any stinkin-confusor:
1) If you hear one pass, 5 out of 7 times, the next one is about 90
2) The ISS REPEATS the same ground track every other day but 51 minutes
3) For a given day, the same pass the next day is 23 minutes later.
This makes portable APRS operations in the wilderness easy. All you need
is ONE PASS time, and you can infer all the others for weeks using the
simple rules, and just keepin notes on pass TIMES when heard.
You don't need no-stinkin-computer. Satellites are in "orbit" and
Just take your favorite satellite, print out a week of passes, and then
look for the "RULE" that will predict future passes. Then all you need to
remember, is the RULE.