On Mon, 03 Sep 2012 13:29:54 +0100, Andy Burns wrote:

276kHz has zero symbols for everyone, it's the downstream pilot
frequency. B-)

Ah yes, had forgotten about that, or rather, thought it was somewhere
in the "gap" between downstream and upstream ranges, wonder why there
isn't a corresponding hole at 69kHz then?

Donno I haven't got a dip their either.

Donno what would be knocking out 375KHz

Sorry that was a typo 370.875

Still outside the MW broadcast band but again could be a NDB. Near an
airport?

--
Cheers
Dave.