[K3] Auto power cutback if high SWR?

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[K3] Auto power cutback if high SWR?

W5UXH
In the K3/100, what happens if I accidentally key into an open or short circuit, or less drastically into a relatively high SWR (e.g. 5:1).  Is there an automatic power cutback?  Or do I just get HI CUR / HI SWR warnings but no automatic protection from my dumb errors.  

If it is the latter case, how "dangerous" would an open circuit be?  I have been known to think I was on the dummy load switch position when it was really an open circuit position.  I have also keyed into a shorted coax going to a dummy load.  (Not yet with the K3, it is brand new.)

I have tried to search the forum and the manual to find a discussion of this.  Probably right under my eyes.

Thanks,

Chuck, W5UXH