[Dave757]

Hi Tim

This is the time of year for longer range reception of MF signals particularly at night

Although I am not a broadcast listener, I regularly hear the OZN Beacon in
Greenland on 372 kHz.

Much nearer to your 612kHz frequency I heard Amateur beacon OK0EMW
on 505.06 kHz a couple of nights ago for the first time this winter running
just 0.98 watts ERP from Czechia, so a broadcast station in Spain is not too
difficult.

Kind regards
Dave