TRANSMITTER Russian patent published in 1998 - IPC

FIELD: radio engineering and commutators. SUBSTANCE: transmitters with on-line frequency alternation according to state-of-the-art device design has large number of resonant circuits which require individual tuning and mode selection, several crystal oscillators and relatively complex frequency synthesizer (even if it is made in microchips). Proposed device has controlled self-exciting oscillator which has required power and which frequency is stabilized by means of crystal oscillator using self-tuning circuit which has capacitor converter of frequency to voltage and differential amplifier which second input receives direct voltage which defines operation frequency of transmitter. EFFECT: decreased cost, increased efficiency of transmission. 1 dwg