The accompanying text about the aerial says:
Quote:
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To the lower end of the aerial a two-wire feeder should be joined, but only one wire is connected to the aerial end. The second one is left quite free and runs parallel to the feeder wire over the whole of its length. The distance between the wires must be kept approximately the same - about two inches is quite satisfactory - and to ensure a parallel run over the whole length it is necessary to insert insulating distance pieces at regular intervals. Keep this double feeder as clear as possible from buildings, and, furthermore the feeder must be tuned, a process effected very simply by lengthening or shortening the feeder at the set end where it joins the input terminals of the set. A little patient experiment will be necessary in order to determine the optimum conditions for length and position, but once this has been done the results from the point of view of maximum signal strength picked up should be highly satisfactory.
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Make of it what you will.