First successful DMR activity

digital mobile radio
click to enlarge

(Update:  my second-ever successful DMR activity was participation in the July 18, 2026 World Wide Check-In.)

It turns out that there is a thing called DMR or digital mobile radio (Wikipedia article). This is a thing that some radio amateurs do. To do DMR, you use a “hot spot” such as the one shown at right.  It uses an antenna to transmit and receive on the 70-centimeter radio band, and it connects to the Internet via wifi.

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