DAC driver output — intermodulations somewhere at the noise floor 
:
50W 37dbc = 43db PEP:
80W 31dbc = 37db PEP:
100W 26dbc = 32db PEP:
40m — 29dbc — 35db PEP:
Just for info — appnote, looks like they are using db PEP and it’s 1 stage amplifier:
Just an example from FTDX3000 parameters:
rd100 current — 500ma, rd16 current 500ma
VHF module- 24dbc — 30db PEP:
