The following pictures document the long way of modifications and testing of EB-104 since the design is somehow loaded with unexpected problems. The very last thing you may want is a high-powered-oscillator! Note all the special ground-modifications around the MOS-FETs and note the modified bias-generation. This isn't all, but most important.
Finally the PA-block worked fine - 1,2KWout on all bands are the result. Yes, this includes 10m! Gain is about 20dB w/o driver (slightly less on 10m) and 50dB with driver. Required DC-power is about 2,5KW+ @ 50V. For SSB-operation cooling was efficient enough by using two 12V-PC-fans. Now only time will tell about reliability!