MULTI-FREQUENCY SIGNAL RADIO-RECEIVING DEVICE Russian patent published in 2007 - IPC H04L27/00 

FIELD: radio communications, possible use for receiving discontinuous information at low frequencies.

SUBSTANCE: radio-receiving device operates in two modes: multi-frequency telegraphy signals receipt and broadband signals receipt. Operation mode of radio-receiving device is set by manual mode switch. Composition of radio-receiving device includes, in particular, blocks, which constitute the main route, common for both types of signal. Synthesizer and clock impulse generator are meant for forming support frequencies and clock impulses, support frequencies sensor, quadrature generation block, pseudo-random series commutator, frequency divider, and block for generating pseudo-random series - for forming support signals, protection block and keys from first to fourth - for protection from concentrated interferences in broadband signal receipt mode, blocks ranging from second to third keys, first and second blocks for reverse transformation of frequency, control information sensor, modulator and through control block - for through control of radio-receiving device routes in multi-frequency telegraphy mode and for forming broadband control signals.

EFFECT: increased interference resistance and expanded functional capabilities of radio-receiving device.

2 cl, 2 dwg