Completed coaxial TV cable join

How to Rejoin a Cut Coaxial TV Cable

Here’s what to do when you’ve accidentally cut an RG6 or RG59 coaxial TV cable in your roof or wall. This how to guide will show you how to join the cable so that your Digital TV will work again.

This procedure is mainly aimed at installed coaxial cables. If you accidentally cut or break a fly lead that goes from the wall to the back of your TV it’s best to replace it.

A Bad Joint
A Bad Joint – someone has simply twisted together the central conductor and shields.

The end result is a cable that works nearly as well as if you hadn’t broken it in the first place. You will have some loss of signal from the connectors and joiner, but it’s much better than doing any other kind of joint without the proper connectors and joiner.

Parts and Tools

To do this, you’ll need to the following parts(links go to RG6 parts, but if using RG59 cable, change your search appropriately):

You’ll also need these tools:

Procedure

  1. Try to pull some slack cable so you have at least 10 centimetres of overlap. If the cable is tight it can be hard to do the terminations(putting ends on the cable) and joint the cable.
  2. Cut the damaged ends off the cable with a pair of cutters. This will give you a clean cut end to work with.

    Cutting the damaged end of the cable off
    Cutting the damaged end of the cable off
  3. Strip the two cable ends with a rotary stripper. You can also strip the cable with a pair of cutters, but it’s harder.
  4. Terminate the cables with F connectors. You can use crimp or compression F connectors, but I recommend compression. Twist-on F connectors are also available, but I don’t recommend them.

    Terminated ends of the cable ready to be re-joined
    Terminated ends of the cable ready to be re-joined
  5. Screw both ends of the cable into either end of an F to F female adaptor(find them on eBay by searching F-type female joiner). They need to be firmly finger tight. It doesn’t matter which way around you put the two ends in.

    Completed coaxial TV cable join
    Completed coaxial TV cable join