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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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