A while ago I replaced my SDRv3 with a RSPdx and boy it was a big win. I'm in Shoreline WA about 13 miles north of Downtown Seattle, I'm presently receiving KAWS CSN International on 89.1 Mhz from Boise Idaho 494 miles. I've got longer DX's before but only with Sporadic E skip. There is some slow moderate fading but not bad. It's noisy but intelligable. Given there is a mountain range inbetween this is quite a catch. The mountains make troppo unlikely, the lack of serious fading makes sporadic E unlikely. So I have no idea what mode of propagation this is.
3gpp.org/
read that, and get back to us when you've digested it.
@Robert Dinse, sure. i understand.
but soon we will be using complete new technologies, quantum ones. imagine quantum dirac radio communications ;) no matter of distance always with no delay. we got already access to neutrino. anyone can play with it now as diy at home. you sure you still want spend time to fix your old dial-up modem?