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MGFoster wrote in
: .... The person who stated that "high ohmic connections" were deleterious to QRP ops was describing his construction of a linear loaded dipole and the connections to the inductance section of the antenna (see N5ESE's article on the "Notebook antenna" http://www.io.com/~n5fc/notebk_ant.htm). This is a small radiation resistance antenna and could be affected by bad connections. I had a look at that article, and have concerns about many things stated, and the way in which the author distances himself from some of what is said. The effect of linear loading is that the contribution to radiation of current in a segment of one section of the linear loading is offset to some lesser or greater extent by the currents in parallel segments. The heat loss is incurred by the current flowing in all the conductors, but the radiation effect is diminished. This mechanism can increase the loss resistance more than it increases the radiation resistance. This is contrary to the widely held view that linear loading is essentially lossless. Owen |
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