Abstract: Radio frequency (“RF”) transmitters include a digital-to-RF electronics module that receives an input data stream and outputs an RF signal, a switch having a first input port that is coupled to an output of the digital-to-RF electronics module, a second input port that is coupled to a matched termination, and an output port that is coupled to a communications network, a DC injection circuit that is configured to inject a DC signal at a first node on an RF transmission path that connects the output of the digital-to-RF electronics module to the first input port of the switch, and a DC monitoring circuit that is configured to sense if a DC signal is present on a second RF transmission path that connects the output of the switch to the communications network.

Abstract: Radio frequency (“RF”) transmitters include a digital-to-RF electronics module that receives an input data stream and outputs an RF signal, a switch having a first input port that is coupled to an output of the digital-to-RF electronics module, a second input port that is coupled to a matched termination, and an output port that is coupled to a communications network, a DC injection circuit that is configured to inject a DC signal at a first node on an RF transmission path that connects the output of the digital-to-RF electronics module to the first input port of the switch, and a DC monitoring circuit that is configured to sense if a DC signal is present on a second RF transmission path that connects the output of the switch to the communications network.

Abstract: A manipulator for lifting conductors of an energized electrical line from a first pole to a second pole. The manipulator has a vertical lifting assembly on which a transverse displacement assembly is mounted. The vertical lifting assembly is attachable to one of the poles by a fastening assembly. The transverse displacement assembly has a mobile element provided with a number of insulators on which conductor holders for receiving the conductors of the electrical line to be lifted are mounted. The transverse displacement of the mobile element and the displacement of another mobile element of the lifting assembly are achieved by motor units controlled by a control unit.

Abstract: A manipulator for lifting conductors of an energized electrical line from a first pole to a second pole. The manipulator has a vertical lifting assembly on which a transverse displacement assembly is mounted. The vertical lifting assembly is attachable to one of the poles by a fastening assembly. The transverse displacement assembly has a mobile element provided with a number of insulators on which conductor holders for receiving the conductors of the electrical line to be lifted are mounted. The transverse displacement of the mobile element and the displacement of another mobile element of the lifting assembly are achieved by motor units controlled by a control unit.

Abstract: The present invention relates to a case or box for storage of compact discs, card discs, DVDs or the like (collectively referred to as “discs”) and methods, and is more particularly concerned with a closing mechanism and includes a stacking, storing or filing means. To attain these ends, the present invention generally comprises a case for storing at least one disc having two covers separaable from one another, at least one cover comprises a recess and a central engaging means for removably receiving a disc, and an attachment means for magnetically attaching said two covers to one another. In a second aspect of the present invention, there is provided a case for storing two discs, said case comprising two covers separatable from one another, each cover comprising a recess and a central engaging means for removably receiving one of the discs, and an attachment means for magnetically attaching said two covers to one another.