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300 ohm twinlead antenna.
W5DXP wrote:
On Monday, July 8, 2013 11:41:47 AM UTC-5, Wayne wrote: OK, after correcting the error in my EZNEC model parameters, the results were too weird to have significance. Here's a zipped EZNEC file model of an 80m folded dipole. http://www.w5dxp.com/80mFD.zip Thanks, but my whole point was that it was not a folded dipole. It was an end fed random (or 1/4 wavelength) wire connected to another 1/4 wavelength wire at the far end, making it a 1/2 wavelength wire. BUT since it is twinlead the 1/4 wavelength wires would be very tightly capacitively coupled, which may between the capacitance and the poximity make it not a 1/2 wavelength wire. It was a thought to get another band out of a stretch of twinlead. Short the far end. At the frequency it was 1/2 wavelength, use it as an end fed wire with the near end shorted, and at half of that, use it as a 1/2 wavelength wire with the near end opened. It does not seem that it will work that way. Geoff. -- Geoffrey S. Mendelson, N3OWJ/4X1GM/KBUH7245/KBUW5379 It's Spring here in Jerusalem!!! |
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