The BPF-A328 from Mini Circuits is a Band Pass Filter with Frequency 327 to 329 MHz, Bandwidth 2 MHz, Center Frequency 328 MHz, Insertion Loss 4.74 to 4.84 dB, Rejection 20 dB @ 305 and 350 MHz. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for BPF-A328 can be seen below.