| 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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| 09/06/1983 | US4403113 Circuit for cancelling sinusoidal pilot signal contained in composite signal |
| 09/06/1983 | CA1153315A1 Signal compression and expansion system |
| 09/01/1983 | WO1983003039A1 Hearing apparatus |
| 08/31/1983 | EP0087336A1 Transistor mixer for microwave frequency transmitters |
| 08/31/1983 | EP0087123A2 Enhanced selectivity signal receiver |
| 08/31/1983 | EP0086872A2 Method and device for transmitting signals which are frequency-shift-keyed in the audible field |
| 08/31/1983 | EP0086865A2 Method of wireless transmission of digital information by means of one transmission frequency |
| 08/31/1983 | EP0086853A1 Circuit for interference rejection |
| 08/30/1983 | US4401977 Radio transmitter for repeated bursts of oscillations |
| 08/24/1983 | EP0086514A1 High speed automatic gain control circuit |
| 08/23/1983 | CA1152660A1 Electronic tuning antenna system |
| 08/23/1983 | CA1152602A1 Transmission apparatus |
| 08/17/1983 | EP0086183A2 Electronic external line repeater |
| 08/17/1983 | EP0086182A2 Electronic impedance-matched line repeater |
| 08/17/1983 | EP0085940A2 Service channel signal transmission system |
| 08/17/1983 | EP0085820A1 Method for multi-speed digital transmission and apparatus for carrying out said method |
| 08/16/1983 | US4399561 Variable capacitance circuit |
| 08/16/1983 | US4399560 Double phase lock loop arrangement |
| 08/16/1983 | US4399557 Minimum power, feedback controller, transmit/receive switch |
| 08/16/1983 | US4399437 Coded information arrangement |
| 08/16/1983 | US4399325 Demodulating circuit for controlling stereo separation |
| 08/10/1983 | EP0085403A2 Device for eliminating FM or like interference from a digital microwave signal |
| 08/10/1983 | EP0085241A2 Oscillator with switched configuration |
| 08/10/1983 | EP0085180A1 Miniaturized antenna duplexer using saw filter |
| 08/09/1983 | US4398286 Radio method and apparatus for gathering and processing information coming from a plurality of stations |
| 08/09/1983 | US4398283 Superhigh-frequency duplex mode telecommunications device |
| 08/09/1983 | US4398217 Method of and arrangement for digitizing a time-discrete video signal using a picture transform coding |
| 08/09/1983 | CA1151735A1 Broadcast signal receiving system for directly recovering the modulating signal from a received modulated high frequency signal |
| 08/09/1983 | CA1151734A1 Transceiver and telecommunication network including such transceiver |
| 08/09/1983 | CA1151556A1 Communications equipment for transmitting a wideband signal over narrowband circuits |
| 08/04/1983 | WO1983002700A1 System for maximum efficient transfer of modulated energy |
| 08/04/1983 | WO1983002699A1 Emergency transmitter and operating method thereof |
| 08/03/1983 | EP0084945A2 Direct digital to digital sampling rate conversion method and apparatus |
| 08/02/1983 | US4397040 UHF Receiver with decreased distortion due to multipath reception |
| 08/02/1983 | US4397035 Device and housing for radio transmission reception |
| 07/27/1983 | EP0084125A2 Apparatus for efficient statistical multiplexing of voice and data signals |
| 07/26/1983 | US4395779 Jamming wave rejecting device |
| 07/26/1983 | US4395778 Undesired signal canceller |
| 07/26/1983 | US4395776 Transmitter having a phase synchronizing system |
| 07/26/1983 | US4395772 Line protection switch controller |
| 07/26/1983 | US4395599 Driving point impedance derived from a transfer impedance |
| 07/26/1983 | CA1150773A1 Receiver having a search tuning circuit |
| 07/26/1983 | CA1150638A1 Gain control circuit for noise reduction system |
| 07/20/1983 | EP0083895A1 Microwave circuit acting as modulator, mixer and transmission-reception separator and devices using such a circuit |
| 07/20/1983 | EP0083883A1 Television transmitter comprising a device for switching between two high frequency channels |
| 07/20/1983 | EP0083602A1 Connecting unit for a ring bus |
| 07/19/1983 | US4394779 Method and system for receiving distortion-free FM signals by vehicular radios |
| 07/19/1983 | US4394778 Tuning control apparatus of receiver |
| 07/19/1983 | US4394776 Priority channel system for a synthesized transceiver |
| 07/19/1983 | US4394775 Frequency division communication system wherein conventional transmitter-transceiver can be used as a repeater or local base station |
| 07/19/1983 | US4394691 Remote control system |
| 07/19/1983 | US4394686 Method and system for correcting time base errors in broadband signals stored in or transmitted through a plurality of narrow-band channels |
| 07/19/1983 | US4393540 Detachable handle having a pivotal part |
| 07/19/1983 | CA1150428A1 Transceiver/receiver information multiplexing system |
| 07/12/1983 | US4393514 Superregenerative receiver |
| 07/12/1983 | US4393513 Input signal level control device for receiver |
| 07/12/1983 | US4393493 Automatic protection apparatus for span lines employed in high speed digital systems |
| 07/12/1983 | US4393489 Audio processor for single, channel, matrixed two-channel and un-matrixed two-channel signals |
| 07/12/1983 | US4393387 Beam recording apparatus effecting the recording by a plurality of beams |
| 07/12/1983 | US4393274 AM Stereo receiver |
| 07/12/1983 | CA1149878A1 Buffer amplifier circuit used in wideband tuner |
| 07/12/1983 | CA1149877A1 Circuit arrangement for a wide-band vhf-uhf television double superheterodyne receiver |
| 07/12/1983 | CA1149876A1 Radio transmitter energy recovery system |
| 07/05/1983 | US4392255 Compact subharmonic mixer for EHF wave receiver using a single wave guide and receiver utilizing such a mixer |
| 07/05/1983 | US4392254 Mechanical tuner with microphonics elimination circuitry |
| 07/05/1983 | US4392253 Phase locked loop circuit |
| 07/05/1983 | US4392244 Automatic transmission and reception control system |
| 07/05/1983 | US4392243 Transceiver having interphone system |
| 07/05/1983 | US4392231 Spread spectrum FH-MFSK decoder |
| 07/05/1983 | US4392020 Stereo demodulation system for an FM stereo broadcast receiver |
| 07/05/1983 | CA1149475A1 Local oscillator circuit |
| 07/05/1983 | CA1149464A1 Phase locked loop circuit |
| 07/05/1983 | CA1149463A1 Transmitter-receiver with automatic alternation control |
| 06/29/1983 | EP0082756A1 Method of and apparatus for decoupling antennas |
| 06/29/1983 | EP0082473A2 Frequency modulation transmitter |
| 06/28/1983 | US4390847 Muting device |
| 06/28/1983 | US4390794 Circuit arrangement for controlling the switch-on of supply voltage |
| 06/28/1983 | US4390749 Noise control system for FM radio |
| 06/28/1983 | CA1149024A1 Receiver having a frequency synthesising circuit |
| 06/22/1983 | EP0082054A1 Method of synchronising transceiver sets of a frequency-hopping network, and set for carrying out this method |
| 06/22/1983 | EP0081555A1 Intermodulation cancelling mixer |
| 06/21/1983 | CA1148626A1 Line isolation and interference shielding for a shielded conductor system |
| 06/15/1983 | EP0081424A1 Radio receiver with a fully electronic control arrangement |
| 06/14/1983 | US4388730 Noise detector and data signal receiver for a frequency modulation system |
| 06/14/1983 | US4388500 Electronic hybrid |
| 06/14/1983 | US4388493 In-band signaling system for FM transmission systems |
| 06/14/1983 | US4388492 Miniature stereo device with extensible speakers |
| 06/14/1983 | CA1148254A1 Antenna low-noise q spoiling circuit |
| 06/08/1983 | EP0080922A1 Device for the detection of the optimum anode charge impedance of a tube transmitter |
| 06/08/1983 | EP0080782A1 Signal transmission system |
| 06/08/1983 | EP0080712A2 Sampling frequency converting apparatus |
| 06/08/1983 | EP0080509A1 Signal booster for digital data transmision through transmission lines |
| 06/07/1983 | US4387470 Receiver input stage with an improvement of the signal to noise ratio |
| 06/07/1983 | US4387465 Sequential threshold detector |
| 06/07/1983 | US4387277 Four wire to two wire converter |
| 05/31/1983 | US4386321 Device for economizing data bandwidth |
| 05/31/1983 | US4386235 FM Stereo demodulator circuit |
| 05/31/1983 | CA1147394A1 Apparatus for receiving an am stereophonic signal |
| 05/26/1983 | WO1983001878A1 Random frequency offsetting apparatus for multi-transmitter simulcast radio communications systems |
| 05/26/1983 | WO1983001875A1 Data muting method and apparatus for radio communications systems |