shafemtol on Nostr: If you want public broadcast that's resistant to jamming from someone with the same ...

If you want public broadcast that's resistant to jamming from someone with the same transmission capability as the broadcaster, I think it gets difficult. I don't have too much knowledge about radio stuff, but something I can imagine working to some extent in theory is very short bursts at changing frequencies across a wide spectrum. A jammer would have to hit the right frequencies at the right time to be efficient, but unless close to the broadcaster, their timing would differ depending on receiver location. It gets more difficult to avoid interference between multiple legitimate broadcasters at different locations, though.

A hardware-based solution might be receivers with multiple antennas, where the signals from the different antennas are continuously automatically tuned and combined in such a way that the signal from the identified broadcaster is amplified compared to any source of noise. I don't know the specifics, but I believe certain satellite receivers work like this, consisting of a large array of small antennas. Again, there would have to be a difference in location between the broadcaster and the jammer.