I don't understand why everyone is so concerned with meter accuracy. A rig that shows 500W on a Bird 43 may show 475 or 525 on other 43s. It all depends on the calibration. At that power level a difference of 25 watts one way or the other is not gonna be discernible on the receive end. As long as the output is in the ballpark of what I expected, I'm happy. Always check the signal on a scope to make certain it's clean and you're good to go. My Drake W-4 (with PEP kit) and Transel Mark II have served me well for decades. So I can't see spending big bucks for something that provides nothing over what I already have. And I am cheap too !! 73.
J.J. 399