Hello Tracey, Yes all very true. But you must add to that the fact that almost nobody uses NDBs anymore except for radio hobbyists. A couple of years ago an NDB on 510kHz in Nebraska was off the air
Hello Warren Checking the RNA website, I'm not surprised that you haven't had any problems on your side of the pond as there are only ten North American loggings in the 460 - 480kHz part of the spect