Gentlemen:
fFirst of all, stop bickering.
Second, you can't measure SWR. you can measure incident power (going to
the load) and reflected power power (coming back from the load). This
is done with a 20$ CB type power meter or with a 60 kilobucks network
analyzer, doesn't really matter!
You can CALCULATE the SWR using the formula. That, you can do!!!
what we call SWR meter s are actually directional couplers that employ
one form or another of phase and magnitude comparisons to separate
incident from reflected power and give a relative reading. The
measurement itself is meaningless without calibration and the coupler
operates in a ratiometric manner, i.e. the output is based on ratios of
signals, not their absolute value!
Alex 4Z5KS