10 Day HYSPLIT Projection
Author Archives: Martin Rothfield W6MRR
10 Day Flight Prediction for 9/14/2021
W6MRR-18 stopped sending at dusk over Algeria at 15:30 UTC today. This is the HYSPLIT prediction for the coming days.
New Solar Power Design
Going with cheap Chinese polysilicon solar cells over Powerfilm. The difference between the two in weight is: polysilicon – 3.75 g, Powerfilm is 6.7 g. The cost difference is enormous. The polysilicon is incredibly fragile. The flat connecting wire is called “tabbing” wire and comes pre soldered. I tried using a soldering iron and foundContinue reading “New Solar Power Design”
W6MRR-18 wakes up for day six
Welcome To SF-HAB
A community of interest for amateur radio and ballooning in all forms. We will be presenting at Pacificon on October 16 from 1 to 1:50 pm. We fly balloons when weather permits, please join us! We announce flights on our mailing list. We chat about ballooning on the San Francisco Radio Club’s Slack channel, #high-altitude-balloon.