Hi Mike and group, ERP can be tricky number to get so I list my power and aerial current which are straightforward to measure. As you mention the power alone is not a very useful number. 73 Joe VO1NA
Dick, If you are recording power, it must be ERP, not RF out because someone with 100W and a very big antenna can have a much greater ERP than another station with 1kW and a small antenna. Mike, G3XD