The 11SB10-2050/X1300-O/O from K&L Microwave is a Band Pass Filter with Frequency 1.4 to 2.7 GHz, Bandwidth 1300 MHz, Center Frequency 650 MHz, Insertion Loss 0.6 dB, VSWR 1.80:1. Tags: Module with Connectors, Suspended Substrate Filter. More details for 11SB10-2050/X1300-O/O can be seen below.