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Roy Lewallen wrote:
Take a look at my 2005 measurements and see if you can do what Cecil and Yuri failed to do coherently -- use the "replacement" concept and explain where the missing degrees went. I didn't fail to explain them, Roy, you just failed to listen to reason, ploinked me, and started uttering Big Lies about me. In my 75m mobile base-loaded bugcatcher antenna: 1. The coil occupies ~25 degrees of antenna. 2. The impedance discontinuity at the coil to stinger junction provides a ~44 degree phase shift. 3. The stinger occupies ~11 degrees of antenna. At resonance the antenna is electrically 25+54+11 = 90 deg long even though it is physically only ~12 degrees long. All of the "missing degrees" appear at the impedance discontinuities but you already know that since I explained this to you two years ago. -- 73, Cecil http://www.w5dxp.com |
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