The BPF-C138 from Mini Circuits is a Band Pass Filter with Frequency 105 to 180 MHz, Bandwidth 75 MHz, Center Frequency 138 MHz, Insertion Loss 1.19 to 1.38 dB, Rejection 20 dB @ 87 and 201 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BPF-C138 can be seen below.