| Patents for H04B 1 - Details of transmission systems, not covered by a single one of groups; Details of transmission systems not characterised by the medium used for transmission (188,568) |
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| 06/01/1982 | US4333076 Ultra-high frequency simultaneous transmission and reception head, millimeter wave transmitter - receiver and radar using such a head |
| 06/01/1982 | CA1124902A1 Memory control circuit |
| 05/27/1982 | WO1982001796A1 Tuner |
| 05/26/1982 | EP0052532A2 Squelch system for use in a multiple carrier AM communications systems receiver |
| 05/26/1982 | EP0052390A1 Method of maintaining the functioning aptitude of a digital information transmission arrangement, and its application |
| 05/25/1982 | US4331843 Apparatus for controlling and indicating the integrity of the connection of telephone subscribers to a switching system |
| 05/25/1982 | US4331842 Voice frequency repeater and term sets and other circuits therefor |
| 05/25/1982 | CA1124331A1 Satellite communication system for speech and telegraphy |
| 05/25/1982 | CA1124330A1 Transmitter/receiver for single channel duplex communication system |
| 05/19/1982 | EP0051774A1 Battery saving frequency synthesizer arrangement |
| 05/18/1982 | US4330689 Multirate digital voice communication processor |
| 05/18/1982 | CA1123978A1 Tuning apparatus |
| 05/18/1982 | CA1123918A1 Frequency counting apparatus |
| 05/12/1982 | EP0051472A1 Single sideband receiver |
| 05/05/1982 | EP0050918A2 Controlled antenna tuner |
| 05/05/1982 | EP0050748A1 Analog-/digital subscriber's station |
| 05/04/1982 | US4328590 Single sideband receiver |
| 05/04/1982 | US4328589 System for indicating multipath interference in radio receiver |
| 05/04/1982 | US4328578 Digital receiver/transceiver synchronization pulse detector for a multiplexing system |
| 05/04/1982 | US4328559 Apparatus for exchange of data between central station and peripheral stations and system for effecting same |
| 05/04/1982 | CA1123131A1 Transformerless trunk circuit |
| 05/04/1982 | CA1123067A1 Variable leading edge circuit apparatus |
| 04/29/1982 | WO1982001451A1 Vessel location system |
| 04/28/1982 | EP0050384A1 Elimination in a pulse radar receiver of interference signals stemming from N distinct sources |
| 04/28/1982 | EP0050239A1 Method of comparing the modulation of two broadcast signals and circuit for carrying out this method |
| 04/27/1982 | US4327444 Miniature transmitter and method for making same |
| 04/27/1982 | US4327438 Receiving circuit in an interference-suppressing communications system comprising narrow-band conventional message modulation and additional pseudo-noise phase shift keying |
| 04/27/1982 | CA1122659A1 Multi band radio receiver system with phase locked loop |
| 04/20/1982 | US4326297 Noise suppressing device in FM receiver |
| 04/20/1982 | US4326295 Television tuner circuit |
| 04/20/1982 | US4326293 Transmitter-receiver with automatic alternation control |
| 04/20/1982 | US4326109 Apparatus for coupling a two-way transmission path to a one-way transmitting path and a one-way receiving path |
| 04/20/1982 | CA1122278A1 Apparatus and method for the identification of specially encoded fm stereophonic broadcasts |
| 04/15/1982 | WO1982001292A1 Mechanical tuner with microphonics elimination circuitry |
| 04/14/1982 | EP0049652A1 Device for time compression and device for time decompression of data |
| 04/14/1982 | EP0049320A1 Digital frequency synthesizer |
| 04/13/1982 | US4325142 Portable radio set with a carrying holder |
| 04/13/1982 | US4325140 Full duplex communication system apparatus using frequency selective limiters |
| 04/13/1982 | US4325103 Provisional fixing structure of electronic tuner |
| 04/13/1982 | CA1121902A1 Method for improving print quality of coarse- scan/fine-print character reproduction |
| 04/13/1982 | CA1121866A1 Electrically tunable inductor and method |
| 04/13/1982 | CA1121865A1 Stable, fast acting a.g.c. system using multiplier-divider circuit comprising logarithmic and anti-logarithmic amplifiers |
| 04/07/1982 | EP0049021A2 Receiver circuit arrangement for two-tone/stereo broadcasting |
| 04/06/1982 | US4323999 Automatic transmission or recording or transmission and reception control system |
| 04/06/1982 | US4323787 Automatic power supply apparatus |
| 04/06/1982 | CA1121275A1 Digital signal/noise ratio amplifier apparatus for a communication system |
| 03/30/1982 | US4322857 Method and circuit arrangement for monitoring a radio receiver |
| 03/30/1982 | US4322856 Double superheterodyne tuner for receiving television aural signals |
| 03/30/1982 | US4322644 Circuit arrangement for controlling the operating functions of a broadcast receiver |
| 03/30/1982 | US4322586 Transformerless line interface circuit |
| 03/23/1982 | US4321482 Circuit system for the generation of a direct control voltage which is dependent on an alternating voltage |
| 03/23/1982 | US4321431 Trunk circuit with single coupling transformer |
| 03/23/1982 | CA1120619A1 Method and arrangement for the transmission of speech signals |
| 03/17/1982 | EP0047386A1 Process for eliminating acoustic interference signals |
| 03/16/1982 | US4320535 Adaptive interference suppression arrangement |
| 03/16/1982 | US4320533 Frequency stabilized downconverter facilitating output frequency alteration |
| 03/16/1982 | US4320532 Apparatus for automatic monitoring of superheterodyne radio receivers |
| 03/16/1982 | US4320530 Channel selecting apparatus employing frequency synthesizer |
| 03/16/1982 | US4320529 Frequency counting apparatus |
| 03/16/1982 | US4320523 Digital signal reception system |
| 03/16/1982 | US4320514 Spread spectrum FH-MFSK radio receiver |
| 03/16/1982 | US4320508 Self-diagnosing, self-correcting communications network |
| 03/16/1982 | US4320498 Auto balancing duplexer for communication lines |
| 03/16/1982 | US4320416 Technique for optimally encoding digitally encoded video signals |
| 03/16/1982 | US4320255 Radio with audio controls and associated displays |
| 03/16/1982 | CA1120165A1 Echo canceller with logarithmic encoding |
| 03/10/1982 | EP0046835A2 Multichannel radiotelecommunication apparatus for the operating modes "two-way speech communication" and/or "alternating duplex communication" |
| 03/09/1982 | US4319222 Transmitter apparatus for an information transmission system |
| 03/09/1982 | US4319093 Transmission bridge for a subscriber set |
| 03/09/1982 | US4319082 Adaptive prediction differential-PCM transmission method and circuit using filtering by sub-bands and spectral analysis |
| 03/09/1982 | CA1119670A1 Continuously synchronized tracking receiver for a priori defined swept carrier |
| 03/03/1982 | EP0046682A1 Single channel duplex communication system |
| 03/02/1982 | US4317959 Speech control circuit |
| 03/02/1982 | CA1119325A1 Tuning apparatus with band-selection means |
| 03/02/1982 | CA1119285A1 Facsimile communication system |
| 03/02/1982 | CA1119272A1 Multiple-processor digital communication system |
| 02/23/1982 | US4317222 Transceiver/receiver information multiplexing system |
| 02/23/1982 | CA1118840A1 Center frequency tuning system for radio-frequency signal receiver |
| 02/16/1982 | US4316061 Minimal delay rate-change circuits |
| 02/09/1982 | US4315333 Circuit arrangement for a wide-band VHF-UHF television double superheterodyne receiver |
| 02/09/1982 | US4315332 Electronic timepiece radio |
| 02/09/1982 | US4315105 Narrow band transmission system and method |
| 02/04/1982 | WO1982000372A1 Current limiting circuit |
| 02/03/1982 | EP0044963A1 Circuit for correcting the distortion of read signals from a PCM transmission apparatus, particularly from a digital audio disc |
| 02/03/1982 | EP0044833A1 Modular stereophonic high fidelity installation |
| 02/02/1982 | US4314378 Antenna low-noise Q spoiling circuit |
| 02/02/1982 | US4314372 Methods and means for producing and reproducing transmitted or recorded sound or video signals |
| 02/02/1982 | US4314277 Input-weighted transversal filter TV ghost eliminator |
| 02/02/1982 | US4314240 Device for locating persons |
| 02/02/1982 | US4314196 Current limiting circuit |
| 02/02/1982 | US4314104 Narrow band voice modulator system |
| 02/02/1982 | CA1117605A1 Noise blanker circuit |
| 02/02/1982 | CA1117604A1 Receiving apparatus having a plurality of antennas |
| 02/02/1982 | CA1117431A1 Syllabic compander with logarithmic chain |
| 01/27/1982 | EP0044678A1 Magnetic reproducing apparatus capable of receiving radio broadcast programmes |
| 01/27/1982 | EP0044374A1 Frequency-synchronisation method of a free-running voltage-controlled oscillator of a phase-locked loop circuit in a radio receiver |
| 01/26/1982 | US4313225 Opto-isolator hybrid circuit |
| 01/26/1982 | US4313219 Receiver for high frequency electromagnetic oscillations having a frequency readjustment |
| 01/26/1982 | US4313215 Circuit for attenuating disturbing noise signals |
| 01/26/1982 | US4313214 Electronic tuning radio receiver |