Thread: swr question
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Old May 31st 05, 05:09 AM
Cecil Moore
 
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Tom Donaly wrote:
VSWR stands for Voltage Standing Wave Ratio. It's supposed to be the
ratio of the greatest voltage on a transmission line to the least
voltage on the same line. On the line with a 72 ohm Z0, and a 50 ohm
load, there exists a standing wave, and the ratio of maximum to minimum
is 1.44 whether you measure it with a 50 ohm bridge at the beginning or
not. If you define SWR as what a 50 ohm SWR bridge measures, you haven't
quite grasped the concept.


And Fred didn't ask what an SWR bridge would measure.
He asked: "What would the SWR be ... ?" You're right.
The SWR would be 1.44:1.
--
73, Cecil http://www.qsl.net/w5dxp

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