Splitters and amplifiers
A splitter shares the aerial feed to connect two or more TVs to a single aerial. Splitters can come in all shapes and sizes but often look like the ‘Y’ splitter, so called as it looks like the letter Y. It has one input terminal (for the incoming aerial) and two output terminals (for two TVs).
A loose terminal connection can reduce or cause disturbance to the wanted signal.
Adding a splitter to a system can reduce the TV signal by as much as half. If this is the case, the passive splitter may need to be replaced either by a distribution amplifier or, alternatively, a dedicated aerial for the TV room location.
Distribution amplifiers (often referred to as boosters) are essentially splitters that boost or increase the shared signals to allow multiple TVs to receive enough signal to maintain a reliable TV reception. However, some amplifiers provide inadequate signal protection screening which can allow incoming interference from other electrical sources or other TV signals which also then get boosted. This can then lead to picture disturbance.
Distribution amplifiers are often connected to the mains electrical supply and come in all shapes and sizes. For example, two-way (two TVs), four-way (four TVs) or eight-way (eight TVs) amplifiers are available and these come with different levels of amplification uplift.
The amplification uplift is measured in decibels (dB) and the higher the number the more powerful the potential uplift is. However, more uplift can mean unwanted interference is also being boosted.