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Yuri Blanarovich wrote:
We used 90 deg. monopole in discussion to show typical loaded or mobile antenna in order to avoid detours to la-la land (cases when current can be and is equal) and to stay on the subject of current magnitude along the typical loading coil. Take a look at the rest of the posting, Yuri. I show where a 1/4WL stub can be made up of 30 degrees of 450 ohm line plus 11 degrees of 50 ohm line. The impedance discontinuity (at a point) furnishes the "missing" 49 degrees of stub. At 4 MHz, that would make a 1/4WL stub only 23.4 ft long or about 10% of a wavelength instead of 25%. Has anything been published on using multiple Z0's to shorten the physical length of a stub? -- 73, Cecil http://www.qsl.net/w5dxp |
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