Correction for attenuation

Attenuation is when something weakens (becomes less strong). For example, if you shout at the top of your lungs in a big room, the sound will get weaker (or attenuate) as it travels away from you.

When it comes to electronics like radios and TVs, attenuation also happens when signals are sent through wires or cables. The signal can start out strong but it will become weaker (attenuate) as it travels through the cable, because the cable blocks some of the signal.

To fix this, we use correction for attenuation. This is when we use special equipment to add strength back to the signal, so that it is strong again when it reaches the other end of the cable. This is why you are able to see a clear picture on your TV, even though the signal must travel a long way through cables before it gets to your TV!