After searching around I have determined it was a Cuban "cut number"
transmission.
It was so strong I was receiving it on my rxvr with the antenna
disconnected.
Excellent code practice ;-}}

Hils wrote:
On 2012-02-23 06:30, ka6uup wrote:
It is 5 letter groups after all.
ka6uup wrote:
I am monitoring a s-9 audio morse code transmission on about 5.799 MHz
It is not a CW signal as no BFO is needed to hear it. It is a
scrambled/coded transmission and appears to be random letters but is not
5 letter groups.
Any ideas???
Chuck KA6UUP

No morse heard on PA3FWM's WebSDR at 0652, though there was a carrier on
that frequency which stopped at 0655.