A repeater with two or more outputs for each input.

A device that enables any one user of a group of users to transmit a message to all other users in that group. Synonym technical control hubbing repeater.

A device that can (a) receive a signal, (b) amplify, delay, or otherwise manipulate the signal, and (c) retransmit it solely for creating deception. [From Weik '89]

In a multichannel communications system, a repeater that has the necessary equipment for the local termination, i.e., the dropping, of one or more channels.

A repeater, consisting of two amplifiers, one associated with each direction, used in a four-wire circuit.

In radio reception and retransmission, a repeater that converts the original band of frequencies of the received signal to a different frequency band for retransmission after amplification.
Note: Heterodyne repeaters are used, for example, in microwave systems, to avoid undesired feedback between the receiving and transmitting antennas. Synonym IF repeater.

See heterodyne repeater.

In digital networking, an active device, having multiple input/output (I/O) ports, in which a signal introduced at the input of any port appears at the output of every port.
Note 1: A multiport repeater usually performs regenerative functions, i.e., it reshapes the digital signals.
Note 2: Depending on the application, a multiport repeater may be designed not to repeat a… (Read More →)

In an optical communication system, an optoelectronic device or module that receives an optical signal, amplifies it (or, in the case of a digital signal, reshapes, retimes, or otherwise reconstructs it), and retransmits it as an optical signal.

A device that interfaces concatenated E&M signal paths.
Note 1: A PLR converts a ground, received from the E lead of one signal path, to -48 Vdc, which is applied to the M lead of the concatenated signal path.
Note 2: In many commercial carrier systems, the channel bank cards or modules have a "PLR" option that permits the direct… (Read More →)