A jack on a wall used to connect a telephone to the telephone line.

The transmission of Morse code (etc) using radio

(dated) The transmission of voice using radio

A telescope which produces a magnified image by reflecting light through a series of mirrors housed in a tube, using a large curved mirror to gather the light and one or more additional mirrors to transmit the light to an eyepiece.

A telescope which produces a magnified image by refracting light through a series of lenses housed in a tube, with a light-gathering objective lens at one end and an eyepiece at the other.

A utility pole that supports telephone lines

A person who is known to the public primarily through their appearances on television shows.

A grouping of television channels, generated at television stations, broadcast over a unified terrestrial or satellite system from which a subscriber may choose various packages to accept and pay for (if not free-to-air)

A wire strung between two locations allowing telegraphic communication between them.

The infrastructure which allows a single telephone to be connected to the network and conduct independent calls.