Err Key Message

Cary VE4EA

I was in the midst of contest operating (RAC) and murphy struck.  

I am receiving a message of ERR KEY on the LCD.  I can't seem to find any reference to this message in either the K3 manual or the Fred Kady book.  

Is there some way to clear this error condition?
I'd really like to know what I did to create the error (bad sequence of entries,etc.)

73 and Thanks,
Cary, VE4EA   (aka VE4RAC this weekend)

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