| 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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| 08/15/1978 | US4107613 Wireless microphone with FM receiver muting system responsive to excessive undesired AM level or low AGC control level |
| 08/15/1978 | US4107612 Phase locked loop exciter generator for high frequency transmitter |
| 08/15/1978 | US4107611 Police protection method and apparatus |
| 08/15/1978 | CA1036674A1 Frequency-changer structures |
| 08/15/1978 | CA1036673A1 Helmet transceiver assembly for a firemen's helmet assembly or the like |
| 08/08/1978 | US4105974 Priority interrupt circuit |
| 08/01/1978 | US4104594 Modified A. M. detector |
| 07/25/1978 | US4103241 Rf amplifier and antenna |
| 07/25/1978 | US4103239 Compressor for both speech and carrier signals |
| 07/25/1978 | US4103238 Transmitter modulated with three modulation patterns |
| 07/25/1978 | US4103118 Autobalance hybrid circuit |
| 07/25/1978 | US4103105 Switching signal generator |
| 07/18/1978 | US4101894 Radio beacon for a nautical emergency rescue system |
| 07/18/1978 | US4101849 Adaptive filter |
| 07/18/1978 | US4101839 Analog-digital ratio detector |
| 07/11/1978 | US4100496 Ghost cancellation device |
| 07/11/1978 | US4100378 Cross-correlation arrangement |
| 07/11/1978 | US4100376 Pilot tone demodulator |
| 07/11/1978 | US4099421 Pushbutton tuner |
| 06/27/1978 | US4097823 Transmitter wherein outputs of a plurality of pulse modulated diode oscillators are combined |
| 06/27/1978 | US4097805 Frequency-synthesizer type transceiver |
| 06/20/1978 | US4096466 Underwater switching |
| 06/20/1978 | US4096439 Amplified microphone assembly |
| 06/20/1978 | US4096362 Automatic cable balancing network |
| 06/13/1978 | US4095184 Radio transceiver power booster |
| 06/13/1978 | US4095183 Tuning circuit |
| 06/13/1978 | US4095182 Display device for transceiver and like |
| 06/06/1978 | US4093923 Signal cancelling circuit |
| 06/06/1978 | US4093920 Delayed response transmitter indicator |
| 06/06/1978 | US4093824 Receiver having a phase-locked loop |
| 05/30/1978 | US4092630 System for error control and phasing in interconnected arq-circuits |
| 05/30/1978 | US4092594 Crystalless scanning radio receiver controlled by processing means |
| 05/23/1978 | US4091424 Facsimile compression system |
| 05/23/1978 | US4091318 Charger/converter console with reel arrangement |
| 05/23/1978 | US4091242 High speed voice replay via digital delta modulation |
| 05/23/1978 | US4091241 Stereo indicating circuit for an FM receiver |
| 05/16/1978 | US4090134 Combinated transceiver, cartridge tape player and radio unit |
| 05/09/1978 | US4088959 Multiple-band digital frequency synthesizer receiver |
| 05/09/1978 | US4088958 Integrated circuit for a programmable television receiver |
| 05/09/1978 | US4088956 Automatic modulation percentage control for amplitude modulated transmitters |
| 05/09/1978 | US4088955 Interference rejection technique |
| 05/02/1978 | US4087759 Power amplifier devices |
| 05/02/1978 | US4087753 Communication apparatus for communicating between a first and a second object |
| 05/02/1978 | US4087751 Transmitter-receiver circuit |
| 05/02/1978 | US4087750 Receiver for detecting and analyzing amplitude or angle modulated waves in the presence of interference |
| 05/02/1978 | US4087641 Noise limiting circuit for FM stereo receiver |
| 05/02/1978 | US4087636 Transmit-receive circuit changing switch system |
| 04/25/1978 | US4086545 Phase locked loop type transmitter receiver |
| 04/25/1978 | US4086536 Single sideband transmitter apparatus |
| 04/25/1978 | US4086535 Microwave oscillator |
| 04/25/1978 | US4086447 Electronic hybrid circuit for connecting a two-wire line to switching system |
| 04/25/1978 | US4086431 Compression system |
| 04/25/1978 | US4086429 Synchronizing system for use in telecommunication |
| 04/18/1978 | US4085370 Radio receiver having co-channel interference operated squelch |
| 04/18/1978 | US4085366 Noise reduction device for citizen's band transceivers |
| 04/18/1978 | US4085364 Circuit for setting transmission and reception frequencies |
| 04/11/1978 | US4084139 Shoulder supported stereophonic radio receiver |
| 04/11/1978 | US4083481 Detachable mounting clip arrangement for miniature portable apparatus or the like |
| 04/04/1978 | US4083011 Battery holder and connector for a radio receiver or the like |
| 04/04/1978 | US4083009 High reliability diversity communications system |
| 04/04/1978 | US4082919 Interconnect control for automatically connecting a simplex or half-duplex radio network to a standard telephone system |
| 03/28/1978 | US4081837 Undesired signal canceller |
| 03/28/1978 | US4081784 Omnidirectional monitor buoy |
| 03/28/1978 | US4081752 Digital frequency synthesizer receiver |
| 03/28/1978 | US4081750 Antenna coupler with automatically switched dummy load |
| 03/21/1978 | US4080569 Radio transceiver dimmer switch |
| 03/14/1978 | US4079379 Null steering apparatus for a multiple antenna array |
| 03/07/1978 | US4078212 Dual mode frequency synthesizer for a television tuning apparatus |
| 02/28/1978 | US4077053 Television signal encoder utilizing a correlation between frames |
| 02/28/1978 | US4077009 Tuning circuit for high frequency receivers |
| 02/28/1978 | US4077007 Radio mounted in a helmet |
| 02/28/1978 | US4076963 Pilot signal cancelling circuit for FM multiplex demodulator |
| 02/21/1978 | US4075567 Broadcast receiver tuning circuit with station memory |
| 02/21/1978 | US4075566 Co-channel interference suppression apparatus |
| 02/21/1978 | US4075565 Single side-band wave generation system |
| 02/21/1978 | US4075440 Automatic communication system reconfiguration apparatus |
| 02/14/1978 | US4074266 System for receiving radio waves through single antenna apparatus |
| 02/14/1978 | US4074087 Bidirectional voice frequency repeater |
| 02/07/1978 | US4072914 Compression and expansion system with enlarged dynamic range |
| 02/07/1978 | US4072913 Feed forward passive coupling system and method |
| 01/31/1978 | US4071826 Clipped speech channel coded communication system |
| 01/31/1978 | US4071716 Dictation system |
| 01/31/1978 | US4071707 Process and apparatus for improving the utilization of transmisson channels through thinning out sections of the signal band |
| 01/31/1978 | US4071700 Testing apparatus |
| 01/31/1978 | US4071695 Speech signal amplitude equalizer |
| 01/24/1978 | US4070628 Radio receiver with selective plural band reception |
| 01/24/1978 | US4070627 Double tuned input circuit for television transmitter amplifier |
| 01/24/1978 | US4070626 Radio telephone with channel switch |
| 01/24/1978 | US4070553 Personal audio listening system |
| 01/17/1978 | US4069454 Transmitter-receiver employing automatic channel hunting and selection |
| 01/17/1978 | US4069398 Method and apparatus for pilot signal cancellation in an FM multiplex demodulator |
| 01/17/1978 | US4069392 Dual speed full duplex data transmission |
| 01/10/1978 | US4068175 Detachable cover member for car radios and the like |
| 01/10/1978 | US4068139 IC compatible variable shunt impedance for Dolby B system |
| 01/03/1978 | US4067014 Correlation receiver for doppler microwave landing system |
| 01/03/1978 | US4066967 Hanger radio |
| 01/03/1978 | US4066965 RF GTWT Saturating circuit |
| 01/03/1978 | US4066845 Pulsive noise removing apparatus for an FM receiver |
| 01/03/1978 | US4066842 Method and apparatus for cancelling room reverberation and noise pickup |
| 01/03/1978 | US4066837 High frequency electrical shield assembly |