Using GNU Radio to Talk to ISEE-3

How to Talk to a 36-year-old Space Probe (ISEE-3) with GNU Radio, a USRP, and a Big Dish, John Malsbury

As many of you have probably read, the ISEE-3 Reboot Project was able to successfully send uplink commands to the space craft. This was accomplished through a lot of team work, strong leadership by Dennis Wingo, and generous support from the community at large. Balint Seeber and I were fortunate enough to work on the communications for this project. When you tell most people that you designed a deep-space uplink modulator in a couple of days, there is a good chance that they will be fairly impressed. In reality though, products like the Ettus Research USRP, the open source SDR framework GNU Radio have made this exceedingly easy. We're just building off the work of many people before us! Let's talk about how this "magic" works!

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