The CBB880/10MK-S1 from G-WAY Microwave is a RF Duplexer with Frequency 869 to 880 MHz / 890 to 891.5 MHz, Band 1 869 to 880 MHz, Band 2 890 to 891.5 MHz, Power 80 W, Insertion Loss 1.6 to 2.8 dB. Tags: Module with Connectors. More details for CBB880/10MK-S1 can be seen below.