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| Class 455 telecommunications - continued |
|---|
| uspc | description |
| 455/104 | 455 telecommunications/(91) transmitter (103) plural separate transmitters or channels (104) carrier and sidebands separately transmitted |
| 455/105 | 455 telecommunications/(91) transmitter (103) plural separate transmitters or channels (105) common frequency |
| 455/106 | 455 telecommunications/(91) transmitter (106) modulation by absorption, shielding, or reflecting |
| 455/107 | 455 telecommunications/(91) transmitter (107) with variation of antenna impedance or dimension for modulation |
| 455/108 | 455 telecommunications/(91) transmitter (108) amplitude modulation |
| 455/109 | 455 telecommunications/(91) transmitter (108) amplitude modulation (109) vestigial or single sideband or suppressed carrier |
| 455/110 | 455 telecommunications/(91) transmitter (110) angle modulation |
| 455/111 | 455 telecommunications/(91) transmitter (110) angle modulation (111) including distributed parameter structure |
| 455/112 | 455 telecommunications/(91) transmitter (110) angle modulation (112) with frequency multiplication or division |
| 455/113 | 455 telecommunications/(91) transmitter (110) angle modulation (113) with frequency control |
| 455/114.1 | 455 telecommunications/(91) transmitter (114.1) having harmonic radiation suppression |
| 455/114.2 | 455 telecommunications/(91) transmitter (114.2) noise or interference elimination |
| 455/114.3 | 455 telecommunications/(91) transmitter (114.2) noise or interference elimination (114.3) predistortion (e.g., for power amplifier) |
| 455/115.1 | 455 telecommunications/(91) transmitter (115.1) measuring, testing, or monitoring of transmitter |
| 455/115.2 | 455 telecommunications/(91) transmitter (115.1) measuring, testing, or monitoring of transmitter (115.2) using a test signal |
| 455/115.3 | 455 telecommunications/(91) transmitter (115.1) measuring, testing, or monitoring of transmitter (115.3) signal strength |
| 455/115.4 | 455 telecommunications/(91) transmitter (115.1) measuring, testing, or monitoring of transmitter (115.4) having meter or indicator |
| 455/116 | 455 telecommunications/(91) transmitter (116) carrier amplitude control (e.g., voice operated on/off) |
| 455/117 | 455 telecommunications/(91) transmitter (117) with electrical protection of transmitter circuit or operator |
| 455/118 | 455 telecommunications/(91) transmitter (118) frequency conversion |
| 455/119 | 455 telecommunications/(91) transmitter (119) carrier frequency stabilization |
| 455/120 | 455 telecommunications/(91) transmitter (120) including tuning |
| 455/121 | 455 telecommunications/(91) transmitter (120) including tuning (121) in antenna circuit |
| 455/122 | 455 telecommunications/(91) transmitter (120) including tuning (121) in antenna circuit (122) with saturable reactor |
| 455/123 | 455 telecommunications/(91) transmitter (120) including tuning (121) in antenna circuit (123) automatically controlled |
| 455/124 | 455 telecommunications/(91) transmitter (120) including tuning (124) distributed parameter device |
| 455/125 | 455 telecommunications/(91) transmitter (120) including tuning (125) automatic adjustment of tuning |
| 455/126 | 455 telecommunications/(91) transmitter (126) with feedback of modulated output signal |
| 455/127.1 | 455 telecommunications/(91) transmitter (127.1) power control, power supply, or bias voltage supply |
| 455/127.2 | 455 telecommunications/(91) transmitter (127.1) power control, power supply, or bias voltage supply (127.2) gain control |
| 455/127.3 | 455 telecommunications/(91) transmitter (127.1) power control, power supply, or bias voltage supply (127.2) gain control (127.3) plural amplifier stages |
| 455/127.4 | 455 telecommunications/(91) transmitter (127.1) power control, power supply, or bias voltage supply (127.4) dual mode (e.g., analog and digital) |
| 455/127.5 | 455 telecommunications/(91) transmitter (127.1) power control, power supply, or bias voltage supply (127.5) power conservation |
| 455/128 | 455 telecommunications/(91) transmitter (128) with casing or housing |
| 455/129 | 455 telecommunications/(91) transmitter (129) with coupled antenna |
| 455/130 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter |
| 455/131 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (131) frequency conversion between signal source (e.g., wave collector) and receiver |
| 455/132 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers |
| 455/133 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (133) with output selecting |
| 455/134 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (133) with output selecting (134) by signal strength |
| 455/135 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (133) with output selecting (135) by signal quality (e.g., signal to noise ratio) |
| 455/136 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (133) with output selecting (136) with control (e.g., automatic gain control, automatic frequency control, etc.) |
| 455/137 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (137) with output combining |
| 455/138 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (137) with output combining (138) with control (e.g., automatic gain control) |
| 455/139 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (137) with output combining (138) with control (e.g., automatic gain control) (139) frequency or phase control |
| 455/140 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (140) selectively actuated or controlled |
| 455/141 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (132) plural receivers (141) including common stage (e.g., local oscillator) |
| 455/142 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (142) convertible to different type (e.g., am to fm) |
| 455/143 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (142) convertible to different type (e.g., am to fm) (143) with distinct signal path for each type |
| 455/144 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (142) convertible to different type (e.g., am to fm) (144) with dual purpose amplifying or other stage |
| 455/145 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (145) panoramic display |
| 455/146 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (145) panoramic display (146) plural separate paths or plural oscillators |
| 455/147 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (145) panoramic display (147) particular local oscillator control |
| 455/148 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (145) panoramic display (148) with oscilloscope sweep signal derivation or control |
| 455/149 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (149) plural output (e.g., plural speakers) (not stereo) |
| 455/150.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) |
| 455/151.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (151.1) remote control of channel or station selection |
| 455/151.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (151.1) remote control of channel or station selection (151.2) wireless link (sonic, rf, or infrared) |
| 455/151.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (151.1) remote control of channel or station selection (151.3) remote oscillator tuned |
| 455/151.4 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (151.1) remote control of channel or station selection (151.4) plural electronic devices controlled |
| 455/152.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (151.1) remote control of channel or station selection (152.1) of or combined with vehicle receiver |
| 455/153.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (151.1) remote control of channel or station selection (153.1) mechanical |
| 455/153.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (151.1) remote control of channel or station selection (153.1) mechanical (153.2) with wired link |
| 455/154.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) |
| 455/154.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (154.2) scanning display |
| 455/155.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (155.1) by meter |
| 455/156.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (156.1) audible indicator |
| 455/157.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (157.1) analog frequency indication (e.g., dial) |
| 455/157.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (157.1) analog frequency indication (e.g., dial) (157.2) with light indication or bar type |
| 455/158.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (158.1) channel index indication |
| 455/158.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (158.1) channel index indication (158.2) with electronic digital indication |
| 455/158.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (158.1) channel index indication (158.2) with electronic digital indication (158.3) using a counter |
| 455/158.4 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (158.1) channel index indication (158.4) with multiple display functions |
| 455/158.5 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (158.1) channel index indication (158.5) non-numeric display (e.g., call letters) |
| 455/159.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (159.1) variable light indication |
| 455/159.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (154.1) with indication of frequency, channel, or selector condition (e.g., tuning aid) (159.1) variable light indication (159.2) plural lamps |
| 455/160.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (160.1) plural tuning modes (e.g., manual and scanning, etc.) |
| 455/161.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning |
| 455/161.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (161.2) with processor control |
| 455/161.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (161.3) using signal strength or quality |
| 455/162.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (162.1) motor activated |
| 455/163.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (162.1) motor activated (163.1) reversible motor (e.g., end-stop control) |
| 455/164.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (164.1) with automatic frequency control |
| 455/164.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (164.1) with automatic frequency control (164.2) processor controlled (afc) |
| 455/165.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (165.1) with frequency synthesizer |
| 455/166.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (166.1) with channel skipping selection |
| 455/166.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (166.1) with channel skipping selection (166.2) with priority channel selection |
| 455/167.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (167.1) with dual sweeping |
| 455/168.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (168.1) multiband |
| 455/169.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (169.1) with particular variable voltage or current tuning |
| 455/169.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (161.1) frequency scanning (169.1) with particular variable voltage or current tuning (169.2) with varactor diode |
| 455/170.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection |
| 455/171.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection (171.1) time actuated |
| 455/172.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection (171.1) time actuated (172.1) including a motor |
| 455/173.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection (173.1) with automatic frequency control of fine tuning |
| 455/174.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection (174.1) with muting (e.g., silent tuning) |
| 455/175.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection (175.1) with carrier wave preset |
| 455/176.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection (176.1) combined with band selection |
| 455/177.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection (177.1) combined with other control (e.g., bandwidth, volume, gain, etc.) |
| 455/178.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (170.1) with mechanical or electromechanical selection (178.1) with plurality of tunable circuits |
| 455/179.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection |
| 455/180.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (180.1) combined with band selection |
| 455/180.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (180.1) combined with band selection (180.2) uhf and vhf |
| 455/180.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (180.1) combined with band selection (180.2) uhf and vhf (180.3) with phase locked loop (pll) tuning |
| 455/180.4 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (180.1) combined with band selection (180.2) uhf and vhf (180.4) varactor tuned (e.g., varactor diode) |
| 455/181.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (181.1) time controlled |
| 455/182.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (182.1) with frequency control |
| 455/182.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (182.1) with frequency control (182.2) automatic (afc) |
| 455/182.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (182.3) fine tuning |
| 455/183.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (183.1) with frequency synthesizer |
| 455/183.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (183.1) with frequency synthesizer (183.2) processor controlled |
| 455/184.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (184.1) with comparing desired and existing tuning conditions |
| 455/185.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (185.1) with channel information storage |
| 455/186.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (185.1) with channel information storage (186.1) with memory control or programming |
| 455/186.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (185.1) with channel information storage (186.1) with memory control or programming (186.2) having a keyboard |
| 455/187.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (179.1) channel or station selection (187.1) separate tuned circuits for each channel or station |
| 455/188.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (188.1) band selection |
| 455/188.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (188.1) band selection (188.2) uhf and vhf |
| 455/189.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (188.1) band selection (189.1) with plural separate mixer or converter circuits |
| 455/190.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (188.1) band selection (190.1) with frequency conversion |
| 455/191.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (188.1) band selection (191.1) with plurality of tuned circuits |
| 455/191.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (188.1) band selection (191.1) with plurality of tuned circuits (191.2) varactor tuned |
| 455/191.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (188.1) band selection (191.1) with plurality of tuned circuits (191.3) with switching between stages |
| 455/192.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (192.1) with frequency control |
| 455/192.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (192.1) with frequency control (192.2) automatic (afc) |
| 455/192.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (192.1) with frequency control (192.3) fine tuning |
| 455/193.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (193.1) with antenna circuit tuning |
| 455/193.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (193.1) with antenna circuit tuning (193.2) with plural resonant circuits |
| 455/193.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (193.1) with antenna circuit tuning (193.3) including varactor diode |
| 455/194.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (194.1) with muting (e.g., silent tuning) |
| 455/194.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (194.1) with muting (e.g., silent tuning) (194.2) amplifier controlled |
| 455/195.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (195.1) variable voltage or current tuning |
| 455/196.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (196.1) including variation of local oscillator frequency |
| 455/197.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (196.1) including variation of local oscillator frequency (197.1) by simultaneous control with signal selection |
| 455/197.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (196.1) including variation of local oscillator frequency (197.1) by simultaneous control with signal selection (197.2) variable capacitor tuned |
| 455/197.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (196.1) including variation of local oscillator frequency (197.1) by simultaneous control with signal selection (197.2) variable capacitor tuned (197.3) including additional tuning circuit |
| 455/198.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (196.1) including variation of local oscillator frequency (197.1) by simultaneous control with signal selection (198.1) including distributed parameter control device |
| 455/199.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (196.1) including variation of local oscillator frequency (197.1) by simultaneous control with signal selection (199.1) discrete frequency types (e.g., channel switching) |
| 455/200.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (150.1) signal selection based on frequency (e.g., tuning) (200.1) with other control (e.g., volume, gain, bandwidth, etc.) |
| 455/201 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (201) exalted carrier |
| 455/202 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (202) suppressed carrier |
| 455/203 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (203) carrier and single sideband |
| 455/204 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (204) vestigial sideband |
| 455/205 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation |
| 455/206 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (206) responsive to one of overlapping signals |
| 455/207 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (207) with plural conversion |
| 455/208 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (208) with synchronized or controlled local oscillator |
| 455/209 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (208) with synchronized or controlled local oscillator (209) plural local oscillators or mixers |
| 455/210 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (210) with carrier amplitude modulation elimination (e.g., specified limiter) |
| 455/211 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (210) with carrier amplitude modulation elimination (e.g., specified limiter) (211) combined with other function |
| 455/212 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (212) with squelch or other audio output silencing |
| 455/213 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (212) with squelch or other audio output silencing (213) using specified filter |
| 455/214 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (214) with particular discriminator or detector |
| 455/215 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (214) with particular discriminator or detector (215) superregenerative |
| 455/216 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (205) frequency or phase modulation (216) with particular frequency division or multiplication |
| 455/217 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (217) with protection circuit for receiver circuit |
| 455/218 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (218) squelch |
| 455/219 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (218) squelch (219) with automatic gain or volume control |
| 455/220 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (218) squelch (220) adjustable |
| 455/221 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (218) squelch (221) audio responsive |
| 455/222 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (218) squelch (222) noise controlled |
| 455/223 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (218) squelch (222) noise controlled (223) short duration (noise blankers) |
| 455/224 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (218) squelch (222) noise controlled (223) short duration (noise blankers) (224) separate broadband detector channel |
| 455/225 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (218) squelch (225) plural paths |
| 455/226.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (226.1) measuring or testing of receiver |
| 455/226.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (226.1) measuring or testing of receiver (226.2) signal strength |
| 455/226.3 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (226.1) measuring or testing of receiver (226.3) signal-to-noise ratio |
| 455/226.4 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (226.1) measuring or testing of receiver (226.4) with meter or indicator |
| 455/227 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (227) responsive to an input signal of particular predetermined frequency |
| 455/228 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (227) responsive to an input signal of particular predetermined frequency (228) responsive to specified modulation (e.g., call alarm, conelrad) |
| 455/229 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (227) responsive to an input signal of particular predetermined frequency (229) responsive to carrier absence or presence |
| 455/230 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation |
| 455/231 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (231) applied at or for specific intervals or periods of time |
| 455/232.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control |
| 455/233.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (233.1) with diverse control (tone, etc.) |
| 455/234.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic |
| 455/234.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (234.2) processor controlled |
| 455/235.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (235.1) forward acting |
| 455/236.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (236.1) variable conversion efficiency (variable oscillator amplitude, etc.) |
| 455/237.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (237.1) responsive to locally injected pilot |
| 455/238.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (238.1) responsive to vehicle speed |
| 455/239.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (239.1) nonlinear automatic gain control |
| 455/240.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (239.1) nonlinear automatic gain control (240.1) variable automatic gain control loop gain |
| 455/241.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (239.1) nonlinear automatic gain control (241.1) different gain stages |
| 455/242.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (239.1) nonlinear automatic gain control (242.1) delayed |
| 455/242.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (239.1) nonlinear automatic gain control (242.1) delayed (242.2) different delay for different signal stages or thresholds |
| 455/243.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (239.1) nonlinear automatic gain control (242.1) delayed (243.1) radio frequency stage only delayed |
| 455/244.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (239.1) nonlinear automatic gain control (244.1) dual time constant |
| 455/245.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (245.1) automatic gain control signal derived from information signal |
| 455/245.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (245.1) automatic gain control signal derived from information signal (245.2) plural stages controlled |
| 455/246.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (246.1) responsive to plural inputs |
| 455/247.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (246.1) responsive to plural inputs (247.1) separate automatic gain control signals |
| 455/248.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (248.1) constant or controlled input impedance |
| 455/249.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (249.1) variable attenuator type |
| 455/250.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (250.1) automatic gain control to improve strong signal handling |
| 455/251.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (251.1) plural stages with different levels or bias to each stage (e.g., partial automatic gain control) |
| 455/252.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (252.1) semiconductor |
| 455/253.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (253.1) plural stages controlled with plates, screen grids, or cathodes connected in parallel |
| 455/253.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (232.1) gain control (234.1) automatic (253.2) plural amplifier stages |
| 455/254 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (254) sensitivity control |
| 455/255 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control |
| 455/256 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (256) combined with other control |
| 455/257 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic |
| 455/258 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic (258) utilizing particular local oscillator control |
| 455/259 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic (258) utilizing particular local oscillator control (259) reference oscillator or source |
| 455/260 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic (258) utilizing particular local oscillator control (259) reference oscillator or source (260) phase lock loop or frequency synthesizer |
| 455/261 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic (258) utilizing particular local oscillator control (261) variable reactance (e.g., reactance tube) |
| 455/262 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic (258) utilizing particular local oscillator control (261) variable reactance (e.g., reactance tube) (262) voltage controlled capacitor |
| 455/263 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic (258) utilizing particular local oscillator control (263) discriminator or detector |
| 455/264 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic (258) utilizing particular local oscillator control (264) voltage control of oscillator |
| 455/265 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (255) local oscillator frequency control (257) automatic (265) with local oscillator synchronization or locking |
| 455/266 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (266) selectivity or bandwidth control |
| 455/267 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (267) tone control |
| 455/268 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (230) local control of receiver operation (268) fidelity control |
| 455/269 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) |
| 455/270 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (270) power-line or receiver element used as wave collector |
| 455/271 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (271) suppression of radiation from receiver via wave collector |
| 455/272 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors |
| 455/273 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors (273) with particular output combining |
| 455/274 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors (273) with particular output combining (274) loop or coil antenna |
| 455/275 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors (275) with frequency changing or selecting in the output path of one or more collectors |
| 455/276.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors (276.1) with phase shifting, correcting, or regulating in the output path of one or more collectors |
| 455/277.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors (277.1) selectively or alternately connected to receiver |
| 455/277.2 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors (277.1) selectively or alternately connected to receiver (277.2) by signal quality (e.g., noise) |
| 455/278.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors (278.1) combined with noise or interference elimination |
| 455/279.1 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (272) plural separate collectors (278.1) combined with noise or interference elimination (279.1) plural antenna currents entering single transformer |
| 455/280 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver |
| 455/281 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (281) having distributed parameters |
| 455/282 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (281) having distributed parameters (282) transmission line |
| 455/283 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (283) undesired signal or noise control (e.g., antistatic) |
| 455/284 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (283) undesired signal or noise control (e.g., antistatic) (284) balancing or cancelling |
| 455/285 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (283) undesired signal or noise control (e.g., antistatic) (285) with image frequency suppression |
| 455/286 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (283) undesired signal or noise control (e.g., antistatic) (286) wave filter, coil, or wave trap |
| 455/287 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (283) undesired signal or noise control (e.g., antistatic) (287) shunt or bypass |
| 455/288 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (283) undesired signal or noise control (e.g., antistatic) (288) particular composition (e.g., of cell or element) |
| 455/289 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (289) with coupling varying, regulating, or control |
| 455/290 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (290) including passive tuned circuit |
| 455/291 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (291) using active device (e.g., as preamplifier or reactance) |
| 455/292 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (292) transformer or other passive inductance |
| 455/293 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (293) specified stage (e.g., mixer, amplifier, or demodulator) |
| 455/294 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (269) with wave collector (e.g., antenna) (280) with coupling to a stage of the receiver (293) specified stage (e.g., mixer, amplifier, or demodulator) (294) with particular electron tube structure |
| 455/295 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (295) modulation distortion or cross talk correction or elimination |
| 455/296 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (296) noise or interference elimination |
| 455/297 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (296) noise or interference elimination (297) in vehicle |
| 455/298 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (296) noise or interference elimination (298) originating in power supply |
| 455/299 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (296) noise or interference elimination (298) originating in power supply (299) filter or rectification in power supply energized by fluctuating or a.c. source |
| 455/300 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (296) noise or interference elimination (300) by shielding |
| 455/301 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (296) noise or interference elimination (300) by shielding (301) plural or compartmented shielding structure |
| 455/302 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (296) noise or interference elimination (302) image frequency suppression |
| 455/303 | 455 telecommunications/(130) receiver or analog modulated signal frequency converter (296) noise or interference elimination (303) using plural separate signal paths |
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