Fellas: For what it's probably worth, I just checked my K2/100 on 160M into a known good B&W 50-Ohm dummyload/wattmeter. At 14.2VDC supply (out of the P/S) my KPA100 draws 16A of current at a measured 100W into the dummyload. Just to muck up the discussion a bit more. 73, Tom N0SS Previous thread trail deleted to save a bit of bandwidth.