Because of Mark Zenier's post, I grabbed my old Sangean 505 portable,
which I haven't used in many months. I couldn't remember if you could
use SSB mode in longwave on it or not (you can't).

But to my amazement - and this is on the built-in whip, remember - I
could hear, faint and scratchy, but recognizable - a transmission on
162kHz LW!! It is not from Europe, I could gather that, it sounded like
a typical American "al this" or "all that , all the time" station - very
commercial. It faded before I could get an ID.

Obviously a fractional wavelength reception of a stronger frequency, but
what? That amazed me!

Tony