SP, maybe no human intervention? Someone, somewhere is paid to keep "that radio" running but doesn't ask why.
A few years ago the Leuchars NDB on 252 kHz was getting interference from Radio Atlantic. I reported the interference. The initial response was "what NDB", then they discovered it was from days of the Hunter fighter. For decades it had been pumping out a high power for 150 miles range.
Turned out the frequency bands had been reallocated and it had been illegal for years. It was replaced with a low powered 15 Miles range one on a different freq.
Same with the Leuchars Eureka beacon on long after Rebecca was obsolete. Perhaps no one dare tell the Scottish Group Captain.