The TWFCB-920.5M05-C05M40-N03 from Techniwave is a Band Pass Filter with Frequency 918 to 923 MHz, Bandwidth 5 MHz, Center Frequency 920.5 MHz, Insertion Loss 5.7 dB, Upper Rejection 40 to 70 dB @ 925 MHz, 927 MHz. Tags: Module with Connectors. More details for TWFCB-920.5M05-C05M40-N03 can be seen below.