The general purpose of this FM radio Transposer TRC Series, is rebroadcasting the signals in the same FM band granting an effective coverage for all those areas where RF signal is too weak. This equipment can be provides at three output power figures and broadcast quality. A complete electrical shield separates the transmitting and receiving section, thus avoiding undesired mutual interaction. All the circuitries have been designed according to “modularity concept”, to grant easy and quick maintenance. This concept also allows using the equipment as single receiver or single transmitter, since the connection between these two section is externally placed and accessible by BNC connectors. Both section can be remotely controlled via RS232 Port. In the design of the TRC series transposers, a spectral attention has been devoted to the consumption aspect: AC-DC switch-mode power supplies have been therefore implemented, with PFC (power factor connector) to drastically reduce the absorption of reactive power.