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Diplexer 1 Port Passing 40-2300 MHz (PVDP3)
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PVDP3
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Detailed Description
A satellite Diplexer is used outside to combine two separate signals: one signal from the satellite dish and another signal from either an off-air TV antenna or cable TV feed into a single coaxial cable. A second diplexer is used inside behind the satellite receiver to separate the combined signals.
Satellite Diplexers eliminate the need for extra wiring thereby reducing the cost of labor and installation materials necessary to run two coaxial drops.
A diplexer is a passive device that implements frequency domain multiplexing. Two ports (e.g., L and H) are multiplexed onto a third port (e.g., S). The signals on ports L and H occupy disjoint frequency bands. Consequently, the signals on L and H can coexist on port S without interfering with each other.
Typically, the signal on port L will occupy a single low frequency band and the signal on port H will occupy a higher frequency band. In that situation, the diplexer consists of a lowpass filter connecting ports L and S and high pass filter connecting ports H and S. Ideally, all the signal power on port L is transferred to the S port and vice versa. All the signal power on port H is transferred to port S and vice versa. Ideally, the separation of the signals is complete. None of the low band signal is transferred from the S port to the H port. In the real world, some power will be lost, and some signal power will leak to the wrong port.
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