The BUC3G6G from Lotus Communication Systems is a Block Up/Down Converter with Input Upconverter Frequency 500 MHz to 3.5 GHz, Input Downconverter Frequency 500 MHz to 3.5 GHz, Conversion Loss 7.7 to 7.8 dB(Up), Output Upconverter Frequency 3 to 6 GHz, Output Downconverter Frequency 3 to 6 GHz. Tags: Module. More details for BUC3G6G can be seen below.