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You are correct, and this is why they tell you that even a SWR of 1.5:1 is too high, because they know that at those drive levels the transistor`s are being pushed to the limits.

The harder you run the transistors, the more sensitive they are to reflected power.

They do say that the Amp will do ( driven) 1 KW peak when hit with that kind of drive, but that is asking a lot of the transistors, and they are on the edge.

I have seen 1 KW+ output from 4, 2sc2879`s when driven hard and the supply voltage was in excess of 20 volts..... briefly.

You do not want to do that with a daily driver set-up. 

 You will be better off to reduce the dead key and peak drive levels no matter what they claim just to make your amp last longer.

If not this is often the result.



73

Jeff