Yes I am trying to install a 100w ATU (antenna Tuner) and maybe I am looking at the power up requirement incorrectly.
The spec sheet states :
PARAMETER DESCRIPTION
Power supply range 10-15 VDC
Max. current 450mA
Max working power 100 watts
etc etc
Last one I had (different brand) I applied 12vdc directly to it and cooked the start up board!!!!