![]() They come in a variety of powers in most cases a small reduction is all that is needed. Attenuators are always a compromise and should only be used if absolutely necessary. While an amplifier provides gain, boosts the signal, an attenuator provides loss, reduces the signal. It is effectively the opposite of an amplifier, though the two work by different methods. This is likely to happen if you live close to a transmitter.Īttenuators can be used to decrease the incoming signal if it is too strong without distorting it. If you are experiencing pixellation or picture break up, it may be that your signal is too strong as this often presents itself similarly to a weak signal. Some can also combine television and FM radio signals. For example, some masthead amplifiers are also distribution amplifiers. Masthead, Set-back and distribution amplifiers These split the TV signal from a single aerial and allow the signal to be sent to several different televisions in the building. These fit between the aerial socket in the wall and your television. These fit directly under an outside aerial and usually the best type of amplifier to fix weak signals. ![]() There are three types of amplifier – masthead, set-back and distribution. To check, remove the power from the amplifier and see whether the problem goes away. This could be unwanted signals and result in picture loss on your own television and, maybe, those living nearby. For example, if water were to get into a masthead type, they can start to boost the result of the fault. Otherwise, all the unwanted signals will also be boosted, which can cause pictures to break up.Īmplifiers themselves are a common source of reception problems. A good amplifier should have a filter built in that only allows the signal you want to be boosted and not any unwanted signals. Even the best amplifier will still add some noise to the television signal it is amplifying/boosting that could result in picture break up. However, if you are using a splitter for several televisions in your house, you may need an amplifier.A signal amplifier should only be used as a last resort when the television signal is weak. An amplifier does not create a signal, and may increase noise. I would not recommend adding an amplifier if you don’t need one. However, sometimes an amplifier is necessary to overcome signal loss related to splitters and junctions. Find out more about your location at You shouldn’t need an amplifier with a 20 foot coaxial cable. It will really depend on your specific location, house structure and terrain. With that said however, we have had customers use the DB4 in their attic with mounts and without mounts and report that it works great. If those materials are wood, vinyl or something else you could experience a 20% or more loss in your signal. Even though you don’t have a metal roof, your home insulation and other side wall materials in your home have a greater chance of getting in the way of broadcast signals in the attic. We always recommend trying to put antennas outside on your roof instead of your attic. Coax will be no more than 20 feet in length running to a single TV. Will this antenna require any amplifier? We will be placing the antenna in the attic area, no metal roof. All stations are located with 35 miles of our location. Looking about getting the DB4 UHF HDTV Antenna.
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