| Patents for H03J 5 - Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner (3,151) |
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| 09/29/1981 | US4292467 Control for audio receiver |
| 09/23/1981 | EP0036335A2 Station selecting apparatus |
| 09/22/1981 | US4291414 Radio receiver operable in station search mode or station select mode |
| 09/22/1981 | US4291413 Search type tuning system with direct address channel selection apparatus |
| 09/22/1981 | US4291290 UHF-VHF tuner having damping means to reduce interference in UHF band |
| 09/16/1981 | EP0035920A1 Frequency synthesizer and radio navigation system comprising such a synthesizer |
| 09/08/1981 | US4288875 Controlled local oscillator with apparatus for extending its frequency range |
| 09/08/1981 | CA1108785A1 Channel selection apparatus |
| 09/01/1981 | US4287601 Self-programing memory tuning system |
| 09/01/1981 | US4287600 Frequency synthesizer with ROM controlled divider and display |
| 09/01/1981 | US4287599 Multi-channel communication device with manual and automatic scanning electronic channel selection |
| 09/01/1981 | CA1108322A1 Television tuning system with provisions for receiving rf carrier at nonstandard frequency |
| 09/01/1981 | CA1108321A1 Frequency counter for a television tuning system |
| 08/19/1981 | EP0033854A1 Control unit for a car radio |
| 08/18/1981 | US4285066 Receiver having a search tuning circuit |
| 08/18/1981 | US4285065 Radio with audio graphic equalizer |
| 08/18/1981 | CA1107418A1 Channel selecting apparatus for use with plural tuning devices |
| 08/12/1981 | EP0033390A1 Scanning radio receiver and transmitter |
| 08/11/1981 | US4283791 Circuit arrangement with frequency synthesis for the tuning of receiving sets |
| 08/11/1981 | CA1106984A1 Electronic tuning system |
| 08/04/1981 | US4282603 Synthesizer tuner |
| 08/04/1981 | US4282516 Keyboard encoding arrangement |
| 07/29/1981 | EP0032878A2 Radio receiver |
| 07/28/1981 | US4281349 Power supply arrangement for a tuning system |
| 07/28/1981 | US4281259 Digital phase comparing apparatus |
| 07/21/1981 | US4280199 Apparatus for scanning an addressable memory |
| 07/21/1981 | US4280140 Microcomputer-controlled one-step-back automatic frequency control tuning system |
| 07/21/1981 | US4279170 Pushbutton tuner |
| 07/14/1981 | US4279035 Channel number entry system |
| 07/14/1981 | CA1105133A1 Circuit for use in remote control of a signal receiver |
| 07/09/1981 | WO1981001931A1 Radio-receiver and/or radio-transmitter station |
| 07/07/1981 | US4277785 Radio control circuit with microprocessor |
| 06/30/1981 | US4275606 Pushbutton tuner |
| 06/02/1981 | US4271532 Receiver with a channel swapping apparatus |
| 06/02/1981 | US4271531 Frequency synthesizer |
| 06/02/1981 | US4271530 Receiver having a frequency synthesizing circuit |
| 06/02/1981 | US4271529 Tunable resonant circuits for a multi-band VHF/UHF/CATV tuner |
| 06/02/1981 | US4271434 Channel selector |
| 06/02/1981 | US4270394 Toning shaft for a rotary switch |
| 05/26/1981 | US4270220 Electronic tuning type television receiver |
| 05/26/1981 | US4270218 Continuous tune all-channel selector |
| 05/26/1981 | US4270217 Processor controlled, service selecting, AM/FM scanning radio receiver |
| 05/26/1981 | US4270216 Tuning and volume indicator |
| 05/26/1981 | US4270215 Channel indicator |
| 05/26/1981 | US4270212 CATV Converter |
| 05/26/1981 | US4270117 Variable rate digital controller for a frequency synthesizer |
| 05/26/1981 | US4269074 Changeover mechanism for pushbutton tuner |
| 05/19/1981 | US4268915 Universal automotive electronic radio with display for tuning or time information |
| 05/19/1981 | US4267739 Pushbutton tuner |
| 05/12/1981 | US4267603 Memory control circuit |
| 05/12/1981 | US4267563 Channel selecting apparatus for use with signal receiver and signal recorder |
| 05/12/1981 | US4266433 Low profile pushbutton radio tuner |
| 05/06/1981 | EP0028100A1 Tuning control apparatus for a receiver |
| 05/05/1981 | US4266295 Continuous tuning control particularly adapted for use in variable frequency receivers and generators |
| 05/05/1981 | US4265128 Turret type frequency selector |
| 04/21/1981 | US4263674 Multi-band voltage variable capacitance tuner having automatic and manual tuning operations |
| 04/21/1981 | US4263581 Manual tuning pulse generator |
| 04/21/1981 | US4262547 Pushbutton tuner |
| 04/14/1981 | US4262364 Electronic digital channel-selecting apparatus |
| 04/14/1981 | US4262307 Fine tuning circuit |
| 04/14/1981 | CA1099412A1 Digital-to-analog converter |
| 04/08/1981 | EP0026486A1 Microprocessor-controlled television apparatus |
| 04/07/1981 | US4261055 Electronic tuning circuit arrangement for direct and indirect station selection using a memory circuit |
| 04/07/1981 | CA1098974A1 Multiplexing and dividing circuit |
| 04/01/1981 | EP0025876A1 Multichannel radiotelephone equipment |
| 03/31/1981 | US4259644 Local oscillator for multi-band reception having single crystal reference oscillator |
| 03/31/1981 | CA1098630A1 Frequency synthesizer tuning system with manual fine tuning |
| 03/24/1981 | US4258355 Digital to analogue converters |
| 03/17/1981 | CA1097830A1 Frequency synthesizer tuning system with signal seek |
| 03/10/1981 | US4254665 Push-button type tuning apparatus |
| 03/03/1981 | US4254506 Channel identification apparatus useful in a multiband sweep type tuning system |
| 03/03/1981 | US4254389 Pushbutton tuner having tapering portion pivotal pins |
| 02/24/1981 | US4253194 Receiver including a tuning circuit having a transmitter search |
| 02/24/1981 | US4253069 Filter circuit having a biquadratic transfer function |
| 02/24/1981 | CA1096519A1 Phase locked loop tuning system with a preset channel memory |
| 02/24/1981 | CA1096447A1 Radio receiver |
| 02/03/1981 | US4249259 Digital channel selection apparatus |
| 02/03/1981 | US4249256 Continuous tuning arrangement for a multiband television receiver |
| 02/03/1981 | US4249255 Continuous tuning arrangement for a multiband television receiver |
| 02/03/1981 | US4249132 Continuous tuning arrangement for a multiband television receiver |
| 02/03/1981 | US4248102 Push button type tuner apparatus |
| 02/03/1981 | CA1095194A1 Phase locked loop television tuning system |
| 01/27/1981 | US4247953 Tunable high-frequency input circuit |
| 01/27/1981 | US4247952 Signal receiving apparatus |
| 01/27/1981 | US4247951 Frequency synthesizer with unauthorized frequency inhibiting means |
| 01/27/1981 | CA1094704A1 Channel selecting apparatus |
| 01/13/1981 | US4245351 AFT Arrangement for a phase locked loop tuning system |
| 01/06/1981 | US4244055 Tuner with phase locked loop synthesizer |
| 01/06/1981 | US4243962 Digital tuning element and method of making same |
| 12/30/1980 | CA1092733A1 Multi-band tuner |
| 12/23/1980 | US4241449 Memory saving all-channel digital television receiver |
| 12/16/1980 | US4240114 Channel selection system for television receiver |
| 12/09/1980 | US4237740 Pushbutton tuner |
| 12/09/1980 | CA1091299A1 Phase locked loop exciter generator for high frequency transmitter |
| 11/25/1980 | US4236251 Frequency synthesizer receiver having memory for storing frequency data |
| 11/25/1980 | US4236182 Automatic pre-programming system for TV receivers |
| 11/18/1980 | US4234961 Receiver comprising a tuning member and an automatic tuning correction suppression circuit |
| 11/11/1980 | US4233686 Radio tuner for coupling with tape recorder |
| 11/11/1980 | US4232560 Keyboard for the preselection of electromagnetic signals |
| 11/04/1980 | US4232397 Automatic channel selection apparatus |