Add 1–2 feet (0. 30–0. 61 m) to this measurement if you want some slack in the cord.
The photo will give you a reference point when it comes time to buy your coupler. Plug and jack connections are commonly referred to as male and female connections. If you are extending the cable cord coming out of your wall, it’s going to have a plug at the end.
The coaxial cords used for cable are basically universal—they’re almost always RG-6 cables. Occasionally you will see an older cable that is a little longer, but the vast majority of cords are essentially the same. If you don’t have an RG-6 coaxial cord, write the diameter of your coaxial cable down and take it with you to the store. There are actually four different sizes of coaxial cable that are commonly used, but RG6 is what you’re going to see in mostly residential applications.
If you have a plug at the end of your cable cord, get a jack-to-jack coupler. If you have a jack at the end of the cord, get a plug-to-jack coupler. Use your photo to double-check that the coupler will fit the cord that you’re connecting to. Coaxial couplers are also known as F-type adapters. Make sure that you aren’t buying an F-type adapter kit designed for installing coaxial kits, though. These kits are designed for installing an adapter on a new cord.
If your port has a plug in it, get an extension cord with a jack on one end and a plug in the other. If your port has a jack in it, get an extension cord with 2 plugs. This cord must be the same type as the cord already in your wall. In most cases, this is going to be an RG-6 cord.
If you have a coupler with flat sides around the bracket, use a wrench to screw the coupler in and secure the connection between the coupler and the cord. [6] X Research source
