What is a duplexer?

Duplexer is a radio device that allows someone to transmit messages and receive them through one antenna. This is done by distributing the functions of the receiver and the transmitter so that they both do not aim. While the two are divided, the duplexer will work correctly only if the two are tuned to the same frequency; Otherwise, there may be problems. Two or more peripheral cavities are required to properly insulate these two signals and have more cavities in general lead to better quality. With Duplexník, the radio is able to send and receive messages over one antenna that serves both purposes. This reduces the number of parts needed for the radio and also facilitates conversations or message relays. The third time and destroy the radio. Duplexer avoids this problem by dividing these two functions, so even if they share the same antenna, they both never interfere with each other. In order to make this distribution, the duplex unit must be able to insulate both functions; Otherwise there may be noise or radio may not be able to do both Funkce.

For the division of two, duplexer uses resonated circuits that are stored in the cavities inside the radio. Normally there are two different circuits and each contains information for the transmitter or receiver. When one function is used, it is dominant and works until the function is completed or until the second function is required. While only two cavities are needed, they can have more than it can increase the quality of the transmission and intake of further insulation of these two.

Although these two functions must be used to function correctly, they must be set to the same frequency; Otherwise, the functions may be too insulated and duplexer will not be able to perform both functions. Not only that, but the radio must be able to tolerate the power from the transmitter, which is generally much higher than the receiver. The temperature may be a problem because high heat can deform the body of the radio, so the body is often made of temperature metal.