In the USA there have never been commercial longwave stations, though various WWV time signals are broadcast in that band.
That, and Atlantic 252 (I believe now long gone) were what he woke up to every morning.
https://en.wikipedia.org/wiki/Atlantic_252
"Although the transmitter was in Ireland, the signal's reach meant that it was often looked upon as a "UK national station". Reception reports were received from such locations as Berlin, Finland, Ibiza and Moscow."