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This calculator finds the equivalent series resistance, magnitude of series reactance given VSWR, Z and Ro.
It is useful for antenna analysers that do not decompose Z into R,X but note that it cannot give the sign of X (there is not enough information). Further discussion at The sign of reactance.
SVN:
The calculator does not do a lot of error checking, if you enter nonsense, it will produce nonsense. NaN means not a number, check the input values.
The results might be very sensitive to small changes in the input variables for some input data. It is worth doing a sensitivity analysis (by varying the input values by a small amount) to get some idea of the uncertainty.
Version  Date  Description 
1.01  20/04/2014  Initial. 
1.02  
1.03  
1.04  
1.05 
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