Not only will this thing provide low and high power readings with 1% accuracy
it will make your antenna analyzer something you rarely if ever use !
Need to know the true resonance of your antenna or want to Plot the beam width and gain of another antenna, use the field strength tools to make accurate plots
The possibilities with this test equipment make calling it a watt meter slanderous !
The world of vector based watt meters is not really that new if you have been paying attention (which I was not) within the last few years
But this one leads the pack !!!