Ron Sparks (@txNgineer,\xa0AG5RS) spoke with us about the convergence of makers and ham radio enthusiasts.
The alternative internet: AMPRNet\xa0(wiki) aka 44 net
South Texas Balloon Launch Team
SatNOGS (their site, their hackaday entry, \xa0and the video Elecia liked)
Weak Signal Propagation Reporter Network ("whisper"). Also on wiki.