The RBP-173 from Mini Circuits is a Band Pass Filter with Frequency 160 to 185 MHz, Bandwidth 25 MHz, Center Frequency 172.5 MHz, Insertion Loss 2.24 to 2.37 dB, Rejection 20 dB @ 129 and 230 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for RBP-173 can be seen below.