Repeaters take in a weak signal, regenerate the waveform

and re-transmit it in a higher power level. So their

function is basically to "boost" the signal, so that signal

can cover longer distance without attenuation.

Colin Pounder has written:

'The regenerators'

Signal repeaters are generally used in the telecommunication and electronics industries. There can be passive radio signal repeaters, multi-port repeaters, optical signal repeaters for optical fiber and digipeaters which repeat packet data.

Star Topology, where Hubs can act as repeaters.

Wireless networks often use repeaters to extend the network signal to distant locations. Ethernet repeaters are commonplace as well, as there are limits to the lengths that cables will function at.