3 ms·
It's still very much alive on shortwave. Here's a US ham demoing it: https://youtu.be/ZB1Fz294aLw https://youtu.be/ZB1Fz294aLw
by urubu 8y ago
It's still very much alive on shortwave.
Here's a US ham demoing it:
https://youtu.be/ZB1Fz294aLw https://youtu.be/ZB1Fz294aLw