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#9
January 30th 07, 04:29 AM
posted to rec.radio.amateur.antenna
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Optimum length for ladder-fed dipole
"Cecil Moore" wrote in message .. . Stefan Wolfe wrote: Since you are using ladder line (assuming you use a suitable gauge for the power transmitted), the dielectric and resistive losses losses are insignificant even at relatively high SWR. I doubt it matters much whether your feedline is 100 feet or 320 feet; most relected power will still get transmitted out and not be absorbed as heat. And at some extreme impedances (accompanied by extreme SWRs) losses mount in the tuner and balun if not in the transmission line. I have a rule of thumb to keep the ladder-line SWR below 25:1 which probably fits with your "relatively high SWR" statement. Yes, I agree. |
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