Total posts : 45366
Ermi:
Your comments relating to the VSWR bandwidth of my NEC antenna model are exactly right — it is about 1/2 of what my plot showed. But it turns out that was not the fault of the NEC program, but a case of GIGO. I had entered the coil values in a form where NEC used the values for 1610 kHz when calculating the net impedance at other frequencies. Fixing that produced plots that agree with your bandwidth analysis. I’ll disable those two links with bad data that I posted so as not to mislead anyone clicking on them later. Thanks for pointing this out.
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