The FBV-181 from Metropole Products Inc. is a Band Pass Filter with Frequency 1.48 to 1.6 GHz, Bandwidth 120 MHz, Insertion Loss 0.7 dB, VSWR 1.50:1, Operating_Temperature -20 to 65 Degree C. Tags: Module with Connectors. More details for FBV-181 can be seen below.