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What is Pfwd and Pref with Complex Zo?
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September 12th 03, 12:51 AM
Dr. Slick
Posts: n/a
(Richard Harrison) wrote in message ...
SWR is more easily determined with an SWR meter or a wattmeter. These
don`t require a slotted line`s 1/4-wave or more minimum of space for
operation.
That's a good point Richard, as some people seem to believe that
you must measure at two points at an electrical 1/4 wavelength apart to
measure SWR. Not true, as you can measure the [rho] with directional
couplers at only ONE point on the line.
The maximum and minimum voltages on a transmission line are not as
significant as the forward and reflected powers because the difference
between these powers is the power delivered to the load and is also the
power supplied by the transmitter as the transmission line has no
storage capacity beyond that required to completely energize the line in
both directions by the traveling wave.
Best regards, Richard Hsarrison, KB5WZI
This is especially true when the transmission line is short and/or
is very low-loss.
Thanks for being one of the few that makes sense on this NG, Richard.
Slick
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