Using Coaxial Cable for TV Installation - How to Wire up a TV Aerial Cable

Summary: In this easy to follow guide learn all about connecting TV cable, coaxial cable, connecting TV aerials, fixing an aerial, the various types of TV sockets and splitting TV signal from the aerial to several devices.

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Please also see our project on the New Wiring and Cable Colours.

Erecting your own TV aerial is not the most difficult job in the world and running the cable to the television can also be a relatively easy task. Coaxial cable can be run externally, through the loft space, through floor voids and even clipped to the top of skirting boards. Connecting up is not difficult either.

This project deals with the loose TV plugs, connecting coaxial cables and how to wire up a TV aerial cable.

Wall mounted connection boxes can also be installed. These can be placed in surface boxes as with an additional electrical socket. A kit can also be purchased to add a TV Aerial or simply extend one you have. Full instructions for plug connection are below. For fixing a TV aerial to brickwork, see our fixing to masonry project.

Coaxial Socket for window sill

Coaxial Socket for window sill

Wall mount coaxial socket

Wall mount coaxial socket

Coaxial cable kit with all fittings

Coaxial cable kit with all fittings

Coaxial cable is used for connecting aerials to TV and radios. Its is used because its make up allows it to transfer high frequency signals while at the same time it is shielded from electromagnetic interference. The electrical signals run through the centre wire which is separated from the outer mesh-wire, or braid, by an insulator. The outer wire acts as an earth and as a shield against electromagnetic interference.

Connecting coaxial wire to a television socket has given some of our users some trouble recently so we have published this project to show you how it is done. The most important thing is that the two wire types are kept separate. Please be very careful when erecting TV aerials and use proper access equipment.

Coaxial plug

Coaxial plug

Coaxial splitter

Coaxial splitter

Aerial kit

Complete aerial kit

Internally threaded top

Internally threaded top

Splitting coaxial cable

Splitting coaxial cable

First split your TV plug into its separate parts. Push the internally threaded top (image below) onto the cable. Then, very carfully, run a hobby knife along a 2 inch length of the outer sleeve of the coaxial cable. Not deep enough to cut through the sleeve or you may cut through the braid underneath. Using your finger nails and twisting slightly, open up the outer sleeve to reveal the braid. Then cut off the surplus sleeve.

Push coaxial braid up

Push coaxial braid up

Push the braid up to the top of the inner sleeve. It will scrunch up at the end. Slide the leafed cable clamp over the inner sleeve next and push it tight to the outer sleeve, trapping the braid inside. Push the leaves closed gently around the outer sleeve.

Leafed coaxial cable clamp

Braid pushed up and leafed coaxial cable clamp pushed on

Push coaxial clamp leaves closed

Push coaxial clamp leaves closed

Take the male plug and hold it against the wire clamp. You will see that the plug is slightly dished inside to receive the clamp. Cut the inner sleeve where the end of the plug reaches allowing for the plug to slide a tiny bit over the wire clamp.

Male plug

Male plug

Cut inner sleeve of cable

Cut inner sleeve of cable

Strip the insulation from the inner core leaving 2mm of insulation which will slide inside the plug. Push the plug over the cable and screw the top part, which you slid on first, onto it.

Screwing aerial plug together

Screwing aerial plug together

Finished cable

Finished cable

Aerial splitter

Aerial splitter

The final image above shows an aerial splitter which allows you to intercept the main cable and split the signal 2 ways to 2 different televisions.

For regulations governing heights of sockets etc, please click here.

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