This is a comprehensive intro to the PSK31 digital mode. It’s all of the major concepts and some demonstration crammed into a 30 minute class.
Tad Cook, K7RA, Seattle, reports: Up until September 23, we saw 32 consecutive days with no sunspots. Then new sunspot group AR2773 appeared, which has a magnetic signature indicating it’s part of new Solar Cycle 25. Spaceweather.com noted... Read more