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On Sat, 27 Aug 2005 15:26:25 -0500, "hasan schiers"
wrote: I found the error, I had to fix two conditions that I had changed in the model: Copper wire (for loss) Ground characteristics Now that both antennas have the same conditions, the T has ever so slightly better gain at 20 degrees than the Inverted L. Not enough to bother with the increased complexity, and the input Z is now down around 5 ohms for the T and 8 ohms for the L. Now, is it worth matching the 8 ohms up to 50 at the feedpoint, or just using the tuner in the shack to take care of it? (coax feed, LMR-400, about 50') If you would go he http://www.qsl.net/ac6la/tldetails.html download the program and enter your load Z and 50' of LMR400 @ 3.5 MHz, you would immediately see the answer to your question. If the 8 ohm is real (j=0) then the total loss is all of 0.4 dB and if the line is 50' long, the resulting input Z is easily matched with low loss. |
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