hmmh....
after thinking about....
MAYBE AN IDEA .... came into my brain....
EMERGENCY BEACON PROJECT in WSPR/WSJTX (maybe modified protocoll) or OTHER WEAK SIGNAL MODE ... battery powered small transmitter with patch antenna 6dBi
like the COSPAS/SARSAT commercial project ...
CAN BE RECEIVED BY SOME EMERGENCY MONITORING STATIONS in the footprint RUNNING 24/7
???? WHAT DO YO THINK ????
73 de dg0opk