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![]() Yuri Blanarovich wrote: Let's back off one more giant step back to measurements. Show where W9UCW was "cheating" in his test setup, pictures and comments at http://www.k3bu.us/loadingcoils.htm where he shows clearly that RF current drops significantly across (through) the loading coil, just like it drops across (through) the resonant antenna (piece of wire or tubing) from max at the base, to zero at the tip. Displacement currents in the inductor and the very high reactance of the very short antenna above the coil explain current difference. Current cannot vanish Yuri. It has to have an alternative path. I can change current difference at each end of the inductor all over the place depending on the design of the loading coil, with NO change in the loading coil position or antenna lengths. It is the theory you have, that the current is tied to the "missing degrees", that is wrong. Without displacement currents there is no current difference at each end of the coil, it is not caused by "missing degrees. It is caused by the capacitance above the coil being very low and the capacitance of the coil to the outside world being much larger. The current is not all gone in the first few turns either. It is a series reactance/shunt reactance problem. 73 Tom |
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