Circuit for setting transmission and reception frequencies

Details Circuit for setting transmission and reception frequencies Circuit for setting transmission and reception frequencies

1976-08-24

1978-04-18

Safourek, Benedict V.

Oscillators

Relaxation oscillators

331158, H04B 140

Patent

active

040853640

ABSTRACT:
A circuit for setting transmission and reception frequencies having a crystal-controlled oscillation circuit with a quartz oscillator, a plurality of capacitors different in capacity connected to the quartz oscillator, switching transistors connected to the capacitors respectively, and a change-over switch for selectively actuating the switching transistors.

REFERENCES:
patent: 3339140 (1967-08-01), Pace
patent: 3543053 (1970-11-01), Mustain
patent: 4009451 (1977-02-01), Moore et al.

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