DB8TF thanks for the pioneer work…
I ordered same Nokia Amp and checking the different posts as a preparation until the board arrives. I read the thread several times and I seem to miss some parts of the puzzle...
Here what I got - StepbyStep
1. remove and bridge the first stage (D100 = PreAmp?) and both filters (W100/W101) and Circulator
2. change IDq for Driver- and End-Stage
3. change Doherty Cirquit to enable 2nd EndFet
4. put a Anaren Xinger in the output and cut the 90°combiner lines on the board
5. Start Optimization/SnowFlaking as shown in the pictures with low Power
(Probably I will interrupt connections to the Peak Amp and drop step 3/4, if one EndFET will give me enough power)
Could you give me some details about following mods, please:
1. IDq - you setup an IDq of 2A for the whole amp (incl. pre-Amp) or per End FET?
2. you injected the BIAS from external 12v, could you post the circuit diagram?
vy 73 de
Alex, DK4FT