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Summary: Second World War RAF instructional film for wireless operators on the use correct use of the morse code key.
Description: A detailed instructional film on the correct manipulation of the morse code key, set in the format of classroom training scenes interspersed with short acted sequences. The first reel shows a class of WAAF wireless operators and covers, in great detail, the correct sitting posture for operating the morse code key - close to the desk, an upright alert posture, legs uncrossed, correct positioning of the thumb, index and middle fingers on the key, flexibility of the wrist and the correct alignment of the forearm and elbow. The second reel shows a class of RAF wireless operators and their instruction covers the correct speed for sending a signal, proper spacing between groups, the adjustment of the gap and spring tension in the morse code key, the necessity for sharp pencils and clear writing, concentration and a correct fitting helmet to avoid the distraction of extraneous noise. The final section deals with the importance of operators always using the standard RAF style, with a warning that exaggerated style offers the possibility that a listening enemy could recognise the operator's unusual style and glean useful information i.e. change of location. The film ends with the following "We aspire to give accurate communications and get the aircraft home".