The BPF-B140N from Mini Circuits is a Band Pass Filter with Frequency 135 to 143 MHz, Bandwidth 8 MHz, Center Frequency 140 MHz, Insertion Loss 4.71 to 4.83 dB, Rejection 20 dB @ 126 and 154 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BPF-B140N can be seen below.