At 06:50 UTC November 23, 2017 @AMSAT Engineering officially commissioned AO-91 (RadFxSat/Fox-1B).— N0JY (@n0jy) November 23, 2017
N0JY turned over operation to N8MH and AMSAT Operations in a QSO on the AO-91 repeater during the pass over the Eastern U.S.
N8MH responded and declared AO-91 open for amateur use!
With the successful launch and impending activation, of AO-91, now is a good time to join AMSAT and receive a digital copy of "Getting Started with Amateur Satellites" for free! Visit https://t.co/XkA44YOTsR and help us Keep Amateur Radio in Space. #amsat #arrl #hamradio pic.twitter.com/Wakzm095TS— AMSAT (@AMSAT) November 20, 2017
A dummy load is a piece of equipment which allows transmitter testing and adjustment with minimal radiation of RF energy.
Most dummy loads are constructed using non-inductive resistors and utilize various heat sinking methods, ranging from passive air cooling (e.g. Elecraft DL-1, MFJ-261) to submersion in non-conductive oil baths (e.g. Heathkit Cantenna, MFJ-250), to dissipate the transmitter power.
RadFxSat (Fox-1B) was sucessfully launched on a Delta II rocket from Vandenberg Air Force Base at 1:47AM PST on November 18, 2017, and has been heard over Europe.
Amateur radio clubs at various NASA centers and facilities will celebrate 60 years of NASA achievements with special event operations from December 2017 through December 2018.
The planned major events, which will involve most of the NASA clubs, are: