Active Repeater definition of Active Repeater in the Free Online Encyclopedia.

Repeater, Active

receiving and transmitting radio device installed at intermediate points in radio communications links, designed to amplify received signals and then retransmit them farther along the link. The intermediate point may be mobile, as a communications satellite, or stationary, as a relay tower. An active repeater consists of an antenna or several antennas, a radio receiver, a radio transmitter, equipment for remote control of repeater operation, and a power supply. The active repeater usually uses solid-state devices; vacuum tubes are used less frequently. The output stages of the radio transmitter usually incorporate traveling-wave tubes.

In contrast to a passive repeater, an active repeater is capable of providing service only to a limited number of links in a communications network. In order to eliminate mutual interference during simultaneous reception and transmission of radio signals, active repeaters use frequency-division, time-division, and coded squelch. Mutual interference is also eliminated by maintaining the signal level within predetermined limits and by protecting the transmitter against overloads (the total power of all transmitted signals must not exceed the permissible loading of the transmitter). Active repeaters often have standby equipment that can be switched in automatically.

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No references found			Active repeaters regenerate the optical signals for distribution between subnetworks and to other floors. On-premises utility is also learning lab by Communications News DynaChip Corporation DynaChip Corporation is the inventor of the Active Repeater, a new patented active programmable interconnect element. DynaChip Announces Evaluation Board for Use With New 66MHz PCI Core by Business Wire An active repeater receives the signal from one site, amplifies it, and retransmits it to a distant site. Short-haul symphony: passive microwave system keeps orchestra sales ... by Communications News			active layer active leaf active leg active location system active logic active margin active master file active master item active material active matrix active matrix display Active Measurement Project Active Membership active mirror active monitor Active Monitoring active network active object active oxygen method active permafrost Active Power active prominence active prominence region Active Reconfiguring Message active region Active Repeater active RFID tag active satellite Active Server Pages active site active sludge active solar energy system active solar system active solid active sonar active sound attenuator active sound cancellation active sound control Active Streaming Format active substrate active Sun active system active termination active tracking system active transducer active transport active vibration suppression active volcano active voltage active window active workings			Active Radio Frequency Cavity Amplifier Active Radio Frequency Identification Active Radio Interferometer for Explosion Surveillance Active Range Clearance Active Range Of Motion Active Range Of Motion Active Range of Motion Exercise Active Ranging Sensor Active Rebuilders and Restorers active reciprocation active reciprocation active reciprocation active reciprocation active reciprocation Active Reconfiguring Message Active Reconfiguring Message Active Recreation for Children Active Reference Table active reformer active reformers Active Region Active Region Active Region Growth and Decay Active Region Monitor Active Region Transient Brightening Active Registry Monitor Active Release Techniques Active Reliable Multicast active remediation Active Remote Sensing of Clouds Active Repeater Active Repeater Satellite active repressor Active Reproduction of Passive Positioning Active Request System Active Reservation Protocol active resistance exercise Active Resistance to the Roots of War active resistance training active resistance training active resistance training active resistance training active resistance training active resistive movement Active Resonator Oscillator Active Response Corps Active Response Geographic Information System Active Retaliation Corps Active Retention Active Retro-Directive Array Active Return Active Returns Active Revenue Management Active Reviews for Intermediate Designs active RFID tag Active Ribbon Control & Positioning System Active Risk Active Risk Management in Education Active Risk Manager

Active Repeater

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