Finally got around to putting a watt meter on this radio, which is a Goozeegoo ATU-100 tuner with built in watt meter.
I am seeing 47-50 watts FM, AM 20 watts max output setting, swinging to 68-70, 100-120 watts max output on SSB. This is running on my 20Ah 12.8 volt Eco-Worthy LiFePO4 battery. That is REALLY good.
I can't tell much difference with the AM NPC selected, but with it on (or off), power will go down to about 1 watt dead key on lowest setting and swing to 3.6, 3.8 watts. Raise it up to about 4 watts dead key and it swings to 15 watts.
I didn't do a lot of yammering, so the heat sink was just a little warm. It cooled off quickly.
If anyone has any questions, please don't hesitate to ask.
73,
Brett