Roger wrote:
Could I add this observation? Both traveling waves and standing waves
can be measured. A single volt meter or ammeter will measure the
standing wave which is the sum of the traveling waves.. A DIRECTIONAL
volt meter or ammeter will measure only the traveling wave within the
design direction, but can not distinguish between components from
multiple reflections that might combine.
A directional voltmeter or ammeter will measure the same voltage or
current no matter where it is placed in the transmission line under
steady state conditions, assuming no resistive losses in the
transmission line.
Perhaps if Roy would have used a directional coupler to
measure the phase shift through his coil, he would have
realized his conceptual mistake a lot sooner. But his
current transducers have absolutely no directional
capabilities at all.
--
73, Cecil
http://www.w5dxp.com