Got My First Packet Through the Space Station

Screen Shot 2015-07-03 at 10.30.08 AM

I’m KF7APE.  At about 1726UTC on July 3.  Very excited!  Using a simple J-Pole antenna during a very close pass.  Can’t wait for new antenna to arrive to do even more :)

Call log courtesy ariss.net:

Screen Shot 2015-07-03 at 10.32.33 AM

Watching (and Listening to) the Leap Second Roll By

This movie is of the Serial Monitor output of an Arduino Uno running my GPSClock code with barely audible WWV (at 10.0 MHz) in the background.  You can actually see the time 23:59:59 as reported by the GPS receiver (an Adafruit GPS Breakout) repeat as the leap second rolls by :)

Units Matter

Ah, the simple joy of checking units on orbital calculations. I am amazed at how the published papers and reference implementations I’ve been looking at today are sloppy with or completely omit units (or worse, mix them).  Getting units right can help avoid losing spacecraft, ya know.

Screen Shot 2015-06-21 at 2.57.54 PM

FOX-1C Cubesat Virginia Tech Camera Demo

FOX-1C is a 1U Cubesat carrying a camera board designed by Virginia Tech (my alma mater) and will be launched later this year. I can’t wait to download pictures of the Earth from this little wonder.

Fundraising campaign here: https://fundrazr.com/campaigns/6pz92/sh/561Zd