Two smaller pictures to show what it can do keydown into a dummy load. The LED bar graph meter is very accurate using the output from a Racal power/SWR bridge from a commercial transmitter, and was calibrated using a Bird 43 with a 2500W slug. I have used a very large variac to reduce the HT on the valve from 4.6 KV to 4 KV as the HT transformer only has a single tap, to help prolong tube life and tame the amp. For a very brief period of time the bird needle was bouncing off the end of the scale no problems!

One final note. Obviously I had to test the amp to its extreme. For test purposes only I managed keydown 1A of plate current at 4.6 KV i'll let you work out the maths! Thanks for looking!