The CB2305/50SK-E from G-WAY Microwave is a Band Pass Filter with Frequency 2280 to 2330 MHz, Bandwidth 50 MHz, Center Frequency 2305 MHz, Insertion Loss 0.45 to 0.6 dB, Rejection 38 to 90 dB. Tags: Module with Connectors, Cavity Filter. More details for CB2305/50SK-E can be seen below.