It is very difficult to prevent moisture from entering the coax cable even though there is a housing on the antenna where the connection is made. This will cause the cable to attenuate or reduce the signal strength - this attenuation occurs slowly and the incremental increase in loss will pass unnoticed until the system becomes unworkable. If the cable is used for an external antenna, and it has been in place for a while, it is more than likely that moisture has entered the cable.
In this way a proper assessment of the requirement can be made.Ĭheck the antenna cable first: Before installing a TV antenna signal booster / amplifier, it is worth checking the antenna coax cable is this has been installed for some time. It is always best to take a good look at the whole television system with its antenna and the like. There are several points to consider when buying TV antenna booster or antenna amplifier. The diagram above shows a TV antenna booster and splitter installed close to the antenna powering two down-leads to two separate televisions. Concept of a TV antenna booster and splitter Again, the best place for the splitter amplifier is as close to the antenna as possible. Any antenna splitter without an amplifier will introduce loss, so having an amplifier as part of the splitter enables this loss to be overcome. Normally a television will have a well designed aerial input stage and just adding another amplifier there will not provide much improvement if any and could make matters worse because it might overload the stage.Ī TV antenna amplifier may also be needed when it is necessary to drive two or more televisions from the same antenna. Just putting another amplifier next to the TV may not give any improvement.Ī television antenna booster may be needed when signal levels are very low and the coax cable or feeder los can impact the signals to the degree when thee do not produce a good signal. They are just amplifying the same signal that the television would receive and normally televisions are designed to provide a very high level of sensitivity. Although some boosters may be designed for use next to the television set, these are unlikely to provide a huge improvement improvement. When is a TV antenna booster neededĪ television antenna booster should only be used at the antenna as we have already seen. If the signal is amplified at the television antenna, then the amplifier has a better signal to amplify and the noise levels are kept lower.Īmplifying the signals at the television will not improve matters much because the signals may already be too low in strength as a result of the coax signal loss that the background noise levels then mean they cannot be recovered properly. One of the reasons an amplifier may be needed is that if the signals are borderline good enough, then the attenuation in the coaxial feeder may mean that they are too weak to provide a good picture because the signals are closer to the background noise level inth e RF sections of the television.
The aim is that when signal levels are low, the amplifier is able to boost the signal to a sufficient level to enable a good picture to be received by the television so that it is able to give a good picture. It is possible that t may bring in more stations, giving a better choice of programming TV antenna booster splitter in a roof space What is a TV antenna boosterĪ TV aerial or TV antenna booster is an amplifier that boosts the signal level of the received television signals to enable a better picture to be received.Īs the name indicates a TV antenna signal booster or amplifier is a unit that amplifies the incoming signal before it enters the television itself.
Get the right one working under the right circumstances will make a big difference, giving a much better picture with less pixellation and general picture disruption. Pick the wrong antenna amplifier, or if one is not suitable for the particular circumstances, then an antenna booster or aerial amplifier can make things worse. However when thinking about buying and installing an antenna amplifier / aerial booster, there are a number of points to consider so that the best antenna amplifier can be bought and installed to give a better picture and better TV reception.
This TV antenna amplifier will enable the signal to be increased in strength so that a better signal can be viewed.
Sometimes televisions need an antenna or aerial amplifier /booster. Types of TV antenna Buying a TV antenna Buying TV antenna amplifier / booster Satellite TV dish installationĪntenna installation guide Attic installation Antenna alignment Antenna height TV Antenna Amplifier: aerial booster TV antenna or aerial boosters are sometimes required when signals reaching the television set are low and the signal needs to be boosted at the antenna.