Abstract
THE aim of the author is to deal in turn with the various parts of a complete radio transmitting equipment so as to enable the amateur to set up and operate his own transmitter. A great deal of interesting and instructive work can be carried out by a “non-radiating” aerial, and certainly this type should be used by the beginner. The circuit arrangements described are either standard practice or of proved practical utility. The author's diagrams make his descriptions easy to follow. Those whose experiments are carried out mainly by trial and error will do well to read this book. Amateurs have recently had many successes to their credit, and they deserve every encouragement. Rigorous mathematicians would not allow some of the proofs given in the book. For example it is stated (p. 7) that the skin effect is greater the larger the cross-section (S), the higher the frequency (f), and the better the permeability (μ). It is less for conductors with a high specific resistance (ρ). “Thus” the skin effect is proportional to Sμf/ρ. It is conceivable that some readers might think that this was a proof.
Wireless Valve Transmitters: the Design and Operation of small Power Apparatus.
W.
James
By. Pp. viii + 271 + 8 plates. (London: Iliffe and Sons, Ltd., 1924.) 9s. net.
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Wireless Valve Transmitters: the Design and Operation of small Power Apparatus . Nature 116, 355 (1925). https://doi.org/10.1038/116355b0
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DOI: https://doi.org/10.1038/116355b0