Thread: VSWR Meter and reactance
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Old August 15th 07, 01:38 PM posted to rec.radio.amateur.antenna,rec.radio.amateur.homebrew
Cecil Moore[_2_] Cecil Moore[_2_] is offline
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First recorded activity by RadioBanter: Mar 2007
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Default VSWR Meter and reactance
amdx wrote:
Is it possible for a VSWR meter to read 1 to 1 with reactance at the
antenna?
Ex. If the antenna Z was R= 30 and X= 40 would the meter read 1 to 1?
Or is there a combination of R and X that would give 1 to 1?

The SWR at the source is lower than the SWR at the
antenna due to losses in the transmission line. 200
feet of RG-58 used on 440 MHz will indicate an SWR
very close to 1:1 at the source no matter how reactive
the load at the antenna. On a normalized Smith Chart,
the SWR "circle" is really a spiral with an end limit
of Z = 1.0 + j0 in the center of the chart.
--
73, Cecil http://www.w5dxp.com
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