As an alternative for the optional 1:4 splitters (see chapter above) dual couplers are available. These couplers provide the RF signal and additional 2 coupler outputs for e.g. monitoring purposes. The mainline has approx. 1.5dB attenuation with approx. 0.5dB negative slope over the whole L-Band. The 2 coupler outputs provide the mainline signal with approx. 10.5dB attenuation and the typical coupler curve with approx. 2dB slope over the whole L-Band. Signals below 950MHz will be blocked by this option and are not suitable for 10MHz or 50MHz...2150MHz broadband signals. The internal DC bypass on the mainline ensures the function of LNB power supply by an optical transmitter card. The coupler outputs are DC blocked.
Due to the directional coupler design, different coupler types are available for transmit and receive modules. 'LFC10TX' is designed to be used together with an optical transmit module, 'LFC10RX' is designed to be used together with an optical receive module. Depending on your system design, both modules can be installed even in a mix configuration to your sat-nms LFTXRX frame.