On Sat, 23 Oct 1999, Dave Sergeant wrote:

Jon says the TX uses FSK.  I remember noting earlier this year that at one
time it was transmitting FAX (clearly identifiable as such to anyone who
has heard FAX).  Perhaps Jon has some information on this.

        As a matter of fact, I do ;-)

        CFH also has a LF weather broadcast on 122.5 kHz which consists of
RTTY bulletins and weather maps in FAX format.  If this particular
transmitter or its associated aerial were down for maintenance, it is
likely that the weather broadcast was "patched-over" to the 137 kHz
transmitter to maintain continuity.  A rare occurence, but it has been
done in the past.

73, Jon - VE1FTL
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