When measuring with an analyzer, one must account for the tandem’s amplitude and frequency nonlinearities, and the fact that after 29 turns of the transformer there’s also a Schottky diode, which can add about 0.5 dB (at power levels around 800–900 W — due to voltage drop) to the overall coefficient when calculating. The analyzer’s own measurement error is also quite significant at these power levels (up to 1 dB). So all measurements are approximate — for accurate ones you’d either have to dig a calibrated oscilloscope out of the chest or buy a proper power meter; my Diamond has been rather disappointing with its nonlinearity and calibration. The amplifier controller has calibration coefficients for 3 sub-bands on HF (thinking of maybe adding one per band?), but you need some kind of reference standard for accurate calibration.
~812W
~1122W
~871W
~1096W
~955W
~955W
~1047W
~933W
~812W
