HAND_WAVING_THEREMIN

Published:2009/7/2 1:31:00 Author:May | From:SeekIC

Single-transistor RF oscillator is tuned to generate frequency about 455 kHz above oscillator frequency of transistor radio. With aluminum-foil antenna away from nearby objects and radio tuned be-tween stations, R1 is adjusted until highpitched tone is heard from radio. Now, as hand is brought toward and away from foil antenna, wailing sounds are produced. With practice, musician can produce recognizable melodies by vibrating hand. Primary controls of frequency are C1 (10-365 pF broadcast radio tuning capacitor) and adjustable antenna coil L1 (Radio Shack 270-1430). Radio can be up to 15 feet away from theremin. Rotate radio for maximum pickup from L1-F. M. Mims, Electronic Music Projects, Vol. 1, Radio Shack, Fort Worth, TX, 1977, 2nd Ed. p 81-89.



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