Bob,
Congratulations, you not only heard a rare Wobbler outburst, but on a previously unreported frequency.
A brief, extreme outburst of wobbling has been heard before. I heard one on 750 a couple days ago, Paul Z. and others have reported hearing them also. Not something you can casually scan for, you just have to happen to be there when it happens.
Sounds like some sort of switch over that disturbs the transmitter. I would attribute this to a switch to or from back-up power, since my current favorite theory is that the Wobbler is a manifestation of power issues. But that is strictly my opinion.
930 is a frequent host of the Wobbler, but as I say 590 is a new one. I'll add that to my list of frequencies to check.
Today at 1400E -- after nulling WAFC, a Spanish speaker in Clewiston -- I was able to hear a fairly good signal from CMHI, playing instrumental music. It was easy to distinguish that from the raucous advertising on WAFC. Then the QRN hit -- storms are building around Miami -- and I abandoned the effort for the time being.
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