Fig. 1. This portable filter is suggested by the author to filter out line noises and should prove valuable to the service man. It consists of 150 turns enamelled or d.c.s. wound in sections on a 2in. former.
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Radio Record, Volume IV, Issue 41, 24 April 1931, Page 16
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38Fig. 1. This portable filter is suggested by the author to filter out line noises and should prove valuable to the service man. It consists of 150 turns enamelled or d.c.s. wound in sections on a 2in. former. Radio Record, Volume IV, Issue 41, 24 April 1931, Page 16
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