mastodon.radio is one of the many independent Mastodon servers you can use to participate in the fediverse.
Mastodon.Radio is a space for the Amateur (Ham) Radio community, anyone interested in Shortwave Listening (SWL), etc.
Come join us and talk radio, technology, and more!
I highly recommend signing up to Hot Iron magazine, at http://www.walfords.net/ordering.htm it's free and full of info on homebrewed gear, tools and circuits. A bit like G-QRP's SPRAT. That said, the last one was a 20 MB Word Doc (2 MB PDF)