(under subclass 177) Oscillators, in which the varied frequency determining element consists of an active element type reactance tube and wherein an adjustable bias control is provided for varying the effective reactance of the tube.
SEE OR SEARCH THIS CLASS, SUBCLASS:
36, for reactance tubes utilized as a frequency control means in an automatic frequency control (osc.) system.
SEE OR SEARCH CLASS
332, Modulators, particularly
140, and 142+ for frequency modulators using reactance tubes. 333, Wave Transmission Lines and Networks,
213+, for reactance tube systems, per se.
334, Tuners,
14+, for tuners which have a reactance tube type tuning means.
