On Sat, 23 Apr 2011 16:05:24 +0000 (GMT) [email protected] wrote: > On the subject of resonant loaded radiator - element >please see my article at > http://www.k3bu.us/loadingcoils.htm > it took me some 40 years to realize wasaaap with loaded >elements - current distribution and efficiency.
Yuri, Regarding the current in a loading coil, of course you are correct. A inductor inserted into a vertical will have higher voltage (ref to GND) on its "upper" end. If the current remainded the same as on at "lower" end, there would be more power on the "upper" end. Not likely. Another way to look at this is that the inductor is part of a Pi network, the two capacitors being the two halfs of the antenna. At the top is the higher impedance port, where, for the same power (discounting losses), the voltage is higher and, by definition, the current is lower. Any one of us who has ever touched the top portion of a center loaded mobile whip during transmit can attest to that higher voltage! TKS for the excellent paper, 73, George, AA7JV _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
