How to model a 6:1 ratio balun using NEC2

June 22nd 06, 07:17 PM posted to rec.radio.amateur.antenna

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How to model a 6:1 ratio balun using NEC2

I am using Nec Win Plus (NEC2) to view the SWR curve of my modeled
antenna. The actual antenna uses a 6:1 ratio balun. Is it incorrect
to just change the characteristic impedance of the line from 50 ohms to
300 ohms to see what effect a 6:1 balun would have on the SWR values? I
was just assuming that the line impedance was only really needed to
calcuate SWR - hopefully I am right.

Thanks,
Scott, WU2X

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