Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 153
ve placing acharge in the condenser C-2 (Fig. 161), which afterwards discharges through the headtelephone, creating a single sound for each group. The adjustment of the Fleming oscillation valve is extremely simple and the stability ofthe device particularly marked, in fact it is only necessary to…
Telegraph, Wireless
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