dxAce ) writes:
Leigh Marrin wrote:

Last night around 0600UTC I heard an odd CW signal on 6937 from my
Southern California location. The signal was weak and about 25wpm,
a little faster than I can easily copy. It appeared to be a beacon
sending a string of mostly numbers. (Uncut.) There would be about
a minute pause between each transmission of several dozen characters.

Each string would begin with the Morse code "dash" character _..._ and
would end with five question marks. (?????) Most of the text were
numbers with the occasional "T". The spacing of each character was even,
not the typical five-figure number groups.

Any idea what/who I heard?

Outside of the ham bands, I rarely hear any CW on shortwave these days,
except for the "cut" tone-modulated AM CW on 5800 from Cuba.

Thanks in advance.

It might have been M12 (they've used that frequency), though they've been known
to use 5 figure groups.




Ace, thanks for the reply. I "googled" M12 and gather that it is
the Israeli Mossad. FWIW, I tuned in 6937 again last night at the same
time and heard nothing.

--Leigh in Santa Barbara, Calif.