Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 157
Fig. 165c—Standby Short Wave Circuits of 107a Tuner. Coils L-3 and L-4 are wound on balls or spheres, mounted on a shaft so they can beturned at a right angle to L-2 and L-S, simultaneously. This is effected by means of the;oupling knob mounted on the right hand end of the tuner, and thus the… … glLUI ONOENSEf^ AERIALTuN\NCi1N0UCTAHC£ Fig. 166—Type 107a Tuner (Modified Valve Tuner). Coil L-5 and condenser C-3 constitute the secondary circuit. L-5 is of fixed value andC-3 is the well known billi condenser, having a value of about .0001 microfarad.C-4 is the telephone condenser of…
Telegraph, Wireless
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