The BPNL-1891+ from Mini Circuits is a Band Pass Filter with Frequency 1790 to 2000 MHz, Center Frequency 1890 MHz, Insertion Loss 2.6 to 3.5 dB, Upper Rejection 27 to 33 dB, Lower Rejection 27 to 36 dB. Tags: Ceramic, Ceramic Filter. More details for BPNL-1891+ can be seen below.