This goes for most HF rigs and high power radios. I see people flipout because they only see 70 to 80 watts out on their radio when indeed it does 100 watts. Without a peak reading meter you will not see the truth and when you turn that radio up to 100 watts inside with the VR chances are you are beating the radio and running it hard because you are now doing about 150 watts true PEP.
This guy explains and shows it so ANYONE can understand and get a grip on it!!
How to measure SSB power output properly on a TS590 - YouTube
This guy explains and shows it so ANYONE can understand and get a grip on it!!
How to measure SSB power output properly on a TS590 - YouTube