Abstract: A combination notch/bandpass filter uses first and second adjacently-located cavities in the conductive housing to respectively provide a tunable, first-stage notch filter and a second-stage bandpass filter. An opening in a wall provides a passage for energy from the first cavity to the second cavity. In the first cavity, a resonator is located adjacent the opening, along with a notch-filter tuning member having one end arranged opposite the resonator and spaced therefrom by a distance to permit the wide end of a coupler to be suspended therebetween. An elongated portion of the coupler carries filtered energy from the first cavity to the second cavity.

Abstract: A repairable transmission line connector is provided where the center conductor has a front removable portion, and a rear portion crimped to the center conductor of the transmission cable. An outer sleeve mounted to a first coaxial conductor of the cable includes a removable front portion, and a rear portion crimped to the first coaxial conductor of the cable. An insulator holds the front center conductor wherein the insulator is held by the rear outer sleeve and the front outer sleeve. The front and rear outer sleeves, and the front and rear center conductors form a connector assembly. In a triaxial connector the connector assembly is surrounded by an insulating sleeve disposed within front and rear connector bodies connected to the cable. By disconnecting the front and rear connector bodies (if present) and the front and rear outer sleeves, access to the front center conductor is permitted for replacement of the front center conductor. The front outer sleeve and the insulator can be replaced as desired.

Abstract: A switching coaxial jack module includes two center conductors contained within a housing. The center conductors include front and rear portions which are axially movable relative to one another between connect and disconnect positions. In the connect position, the front portions are electrically connected to the rear portions. In the disconnect position, the front portions are electrically disconnected from the rear portions. A switch mechanism is contained within the interior to electrically connect the rear portions when both of the front portions are in the disconnect position and to electrically disconnect the rear portions when at least one of the front portions is in the connect position.

Abstract: An amplifier module for radio frequency signal circuits includes an electrically conductive housing. Two coax connectors are electrically linked to an amplifier circuit contained within the module. A separate transformer is external to the module. Both the module and the external transformer are mountable to a chassis frame. Other modules are usable in the system in addition to the amplifier module. The transformer can be wall mounted to the chassis frame, or the transformer can be internal to a module which also mounts to the chassis frame.

Abstract: An amplifier switch controller is provided for use in a headend cable transmission system having first and second amplifiers and amplifier input and output paths connected to one of the first and second amplifiers, which becomes the currently activated amplifier. The amplifier switch controller comprises an input sampler for sampling a combined signal on the input signal path and measuring an input signal level. The amplifier switch controller also comprises an output sampler for sampling the amplified combined signal on the output signal path and measuring an output signal level. A program means receives the input and output signal levels and determines whether the currently activated amplifier is not functioning properly. If it is not functioning properly, the program means generates a control signal to a switch.

Abstract: A module for radio frequency signal circuits includes an electrically conductive housing. Coax connectors are secured to the rear face of the housing. A circuit board is contained within the interior spaced between sidewalls of the housing. A ground side of the circuit board includes a layer of electrically conductive material which is electrically connected to the housing. Coax cables extend within the interior of the housing from the coax connectors and between the ground side of the circuit board and an opposing sidewall. An opposite side of the circuit board contains circuit components inner connected with one another through a plurality of circuit paths. The components include directional couplers connected in series to combine branch circuits with each branch circuit having a separate attenuator.

Abstract: An optical fiber cable management device includes a modular side wall construction, and a plurality of slideable and rotatable cable management trays disposed within the device. The trays can be configured for both termination and storage, storage only, and for supporting cable components. One or more slideable drawers are also provided within the device. The device provides cable termination, splice and storage of the optical fiber cables.

Abstract: A cable exit trough is mountable to a lateral trough section either during initial assembly of the cable routing system, or at a later date. The exit trough includes a bracket portion mountable to the top edge of one of the sides of the lateral trough section. Two lead-ins are provided to lead the cable in an upward direction from the lateral trough section to the exit trough. The exit trough includes an exit trough portion extending from the bracket portion upwardly away from the lateral trough section. The exit trough portion includes a convexly curved bottom trough surface, and two convexly curved upstanding sides. The exit trough portion and the lead-ins define a cable pathway from the lateral trough section to an exit point of the exit trough portion which can either lead downwardly relative to the lateral trough section, or horizontally.

Abstract: A cable trough is provided including a bottom portion and two upstanding sides extending from the bottom portion to define a cable pathway. The upstanding sides define an enlarged central portion of the cable trough, and the bottom portion including at least one exit trough portion. The exit trough portion can be centrally located, with a bypass pathway on either side. At least one separator wall is provided to separate the exit trough portion from each bypass pathway. A component flange is also provided extending from one of the upstanding sides. The cable trough can also include a cable storage pathway. Alternatively, two exit trough portions can be positioned on opposite sides of the cable trough adjacent each upstanding side, and on opposite sides of a central bypass pathway.

Abstract: In the present invention, a tuning circuit which includes a controllable switch based on a diode (D1), for example, and which is connected in parallel with a resonator, is located between the low impedance end of a center conductor (11) of a quarter wavelength resonator and ground, whereupon resonant frequency tuning is based mainly on a change in the inductance of the resonator. Voltages and power affecting a tuning circuit realized according to this invention are essentially smaller than in a circuit in which the capacitive load of a resonator is tuned by means of a similar tuning circuit located at the high impedance end of the resonator.

Abstract: A switching coax jack module (10) contains two removable jacks (14, 14'). The jack module (10) includes a sheet metal housing (12) with a front wall (22) and a rear wall (24). An interior wall structure (20) within the housing (12) defines two recesses (34, 34') within the housing (12) recessed from and open through the front wall (22). The interior wall structure (20) carries four sliding coax connectors (60a, 61a, 60a', 61a') with two of the four exposed within each of the recesses (34, 34'). Coax cables (60b, 61b, 60b', 61b') contained within the housing (12) connect each of the four sliding coax connectors (60a, 61a, 60a', 61a') with individual ones of coax connectors (60, 61, 60', 61') mounted on the rear wall (24) and exposed to an exterior of the housing (12). Two switching jacks (14, 14') containing switching components (125) are slidably received within the recesses (34, 34'). Sliding connectors (112, 113) mate with the housing sliding connectors (60a, 61a, 60a', 61a').

Abstract: Apparatus and methods for the lawful intercept of mobile telecommunication are provided. The A Interface at a base station subsystem is bridged with a Y-cable, and a copy of the data on the telecommunications lines are forwarded to a switch. The out-of-band control information such as SS7 signalling information is forwarded to a processor which continuously monitors the mobile identification numbers and/or telephone numbers of called and calling parties and compares the numbers to a database of to-be-tapped numbers. Upon finding a match, the processor causes the switch to provide the copy of the channel on which the call is being carried to a listening device.

Abstract: A splitter/combiner module for radio frequency signal circuits includes an electrically conductive housing. Coax connectors are secured to the rear face of the housing. A circuit board is contained within the interior spaced between sidewalls of the housing. A ground side of the circuit board includes a layer of electrically conductive material which is electrically connected to the housing. Components on the circuit board include splitter/combiners for splitting a signal into a plurality of branch signals each having an individual attenuator component.

Abstract: For use with various types of devices conditioning radio signals, a temperature compensating cavity resonator includes a practicable and effective assembly.

Abstract: A module for radio frequency signal circuits includes an electrically conductive housing. Coax connectors are secured to the rear face of the housing. A circuit board is contained within the interior spaced between sidewalls of the housing. A ground side of the circuit board includes a layer of electrically conductive material which is electrically connected to the housing. Coax cables extend within the interior of the housing from the coax connectors and between the ground side of the circuit board and an opposing sidewall. An opposite side of the circuit board contains circuit components inner connected with one another through a plurality of circuit paths. The circuit components include an equalizer removable through the forward face of the housing to equalize an RF attenuation across a broad band.

Abstract: A combined resonator-cavity filter includes a number of cavity structures designed for cooperative arrangement within a housing. The resonator cavities are constructed and arranged to pass energy in an assigned frequency band. The cavities include a first cavity structure having a corresponding cavity volume and constructed to provide a first Q, and a second cavity structure having its corresponding cavity volume and constructed to provide a second Q. The cavity volume corresponding to the second cavity structure is less than the cavity volume corresponding to the first cavity structure. Other aspects are directed to the arrangement and uses of sets of such cavity structures as part of a combined duplexer-receiver having the same housing.

Abstract: A connection arrangement, in particular an intermodulation-protected coaxial connection arrangement comprising a cable (1) and a cable connection means (2, 11), such as a coaxial connector (2), a lead-in unit (11) or the like, fixed to the cable. The connection arrangement comprises a conductive thick-walled connection piece (3) having an aperture (3a) forming a passage for the cable through the connection piece to the cable connection means (2, 11). The connection arrangement further comprises a crimp connection (5) or the like between the connection piece and the cable connection means, said crimp connection forming between the connection piece (3) and the cable connection means (2, 11) a first closed-circle sealing surface (5) around the aperture (3a) comprised by the connection piece (3).

Abstract: The invention relates to a filter, a method for manufacturing a filter, a resonator construction, and a method for manufacturing a resonator construction. The filter comprises a shell construction and a plurality of resonators mounted in the shell construction for forming a multi-circuit filter. The filter comprises a connecting portion which combines the resonators and is integral with the resonators.

Abstract: A coax connector bay and drawer maintain cable routing along sides of vertical array of drawers. When in a closed position, the drawers have access opening on opposite sides of the drawers to permit cables to be routed along the sides of the drawers and into the access openings for coupling to coax couplers. The drawers are slidable to open positions to permit a technician to have access to an interior of the drawers.

Abstract: A switching coaxial jack includes first and second parallel aligned electrically conductive coaxial center conductors. The center conductors are divided into front and rear portions. The rear portions include movable springs to separate the rear portions from the front portions. A V-shaped switching spring connects the rear portions. Levers push the rear portions out of connection with the switching spring and into connection with the front portions upon insertion of plugs into forward ports of the jack.