ULTRA LONG RANGE RADIO NAVIGATION AND COMMUNICATION SYSTEM Russian patent published in 1998 - IPC

FIELD: locating objects, radio communication for message transmission to coast objects, surface and underwater vessels. SUBSTANCE: transmitting part of device has message source, buffer memory unit, information message manipulator, transmitter and transmitting antenna, synchronization and control unit and envelope detector. Receiving part of device has receiver, demodulator of information signals, buffer memory unit, recording equipment, read-only memory unit for carrier frequency index, navigation signal counter, envelope detector. EFFECT: increased functional capabilities. 3 dwg