![]() If a distribution amplifier has 15dB of fixed gain, a four output distribution amplifier will have an effective gain of about 7.5dB per port (15dB gain – 7.5dB splitter loss) from the input port to the output port(s).Ī power inserter is used to back feed power to the distribution amplifier through one of the RF output ports so the distribution amplifier can be mounted at a location where power is not available. A four port amplifier will have 25% of the power on each output port, which is approximately 7.5dB of signal loss due to the splitter on the output. Splitting the signal into two output ports with 50% of the signal on each port will cause the signal level to drop by approximately 3.5dB. ![]() Each output port will have approximately 50% of the signal level coming out of the amplifier. ![]() In a two output distribution amplifier, the signal splitter on the output of the amplifier will divide the signal into two separate output ports. However, the internal splitters that provide multiple outputs add signal loss, or negative dB. In most distribution amplifiers, there is a fixed +15dB of gain. Positive or +dB is signal gain, and negative or -dB is signal loss. This has no impact on the performance of the distribution amplifiers when they are used with TV antennas since that frequency range is not used for over the air TV reception.Īmplifier gain is the amount the distribution amplifier will boost the TV signals. Channel Master distribution amplifiers all have the ability to pass signals in the return path back to the cable network. To do this, signals are sent back into the cable network in the 5-42 MHz range, which is called the return path. In a cable telecommunications network, cable modems, multimedia terminal adapters for cable telephony (MTAs), and set top boxes will all need to be able to transmit signals back into the cable network to allow for two-way communications. This situation will be the same whether the amplifier has multiple outputs, or only has one output and an external splitter is attached to that output. For an eight-way amplifier, there is 12.5% of the signal available at each output port. For a four-way amplifier, the signal is divided four ways, so there is only 25% of the signal available at each output port. With a two-way amplifier, only 50% of the gain of the amplifier will be available at each output port. For instance, with a one-way amplifier has 100% of the gain of the amplifier is available at the output port. The reason for this is that the amplifier has a fixed amount of gain, and as the output signal is divided to more ports, there is less signal available for each port. All output ports of a single amplifier will have the same strength signal available, but the actual signal boost (gain) is determined by the number of outputs on the amplifier. In areas with very weak signals using an over the air antenna, you may need to use a preamplifier at the antenna first to increase the signal levels to an adequate level.Ĭhannel Master TV signal distribution amplifiers are manufactured with one-way (1-Port), two-way (2-Port), four-way (4-Port), and eight-way (8-Port) output ports. They are designed to distribute signals to multiple TV outlets within a house, or when there are very long coaxial cable runs to TV outlets. Additionally, Channel Master distribution amplifiers have precision machined SCTE conforming sealed f-ports and have a cast aluminum housing, powder coating, and are weather sealed for corrosion resistance.Ĭhannel Master TV signal distribution amplifiers are typically mounted indoors, but are safe to use outdoors as well. Channel Master offers distribution amplifiers with one-way (1-Port), two-way (2-Port), four-way (4-Port), and eight-way (8-Port) distribution ports with the lowest distortion performance available. It’s important that your distribution amplifier be centrally located (relative to distribution lines), since the longer the lines, the more signal loss there will be within the system.Ĭhannel Master has engineered and produced superior quality TV signal distribution amplifiers which offer professional grade performance that support both analog and digital broadcast signals. To ensure all your devices receive proper strength signals. The goal and purpose of a distribution amplifier is to increase the strength of received signals to a level that is greater than the signal losses associated with the antenna distribution system. ![]()
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