MacDonald, Alexander Forsyth, 1897-1965 · Port Credit, Ont. : Aviation Service Corporation · leaf 90
ion, it shouldnever be taken for granted that radio equipment isINFALLIBLE. It can, and does, on occasion fail. Com-plete dependence on radio has provided the preludeto all too many an airplane disaster. A pilot should byall means make full use of his radio equipment. Heshould never, however,… … ffg. I. Wave Length. Wave Length and Frequency When a stone is dropped in water (Fig. 1) wavas areset up. While the height, or strength, of the wavesgrows weaker as they travel away from the pointwhere the stone hit the water, the length of the waves(W.L.) never varies. A radio transmitter sets up…
Airplanes
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