Trying to build a simple SWR / RF Power meter. I am using a dual directional coupler that supplies a voltage relative to the RF power. My problem is it is not liner... ( I thought it would be :blush: ) This is what I get... 100 watts = 2.82 volts 10 watts = 0.891 volts 1 watt = 0.281 volts My q…

Calculating SWR with RF directional couplers

system November 27, 2012, 1:52am 3

Magician:
Power = ( Volts / 0.281 ) ^ 2;

What is the ^ ?