The CBP-1023A+ from Mini Circuits is a Band Pass Filter with Frequency 1005 to 1041 MHz, Center Frequency 1023 MHz, Insertion Loss 2.5 to 3 dB, Upper Rejection 20 to 30 dB, Lower Rejection 20 to 30 dB. Tags: Surface Mount, Ceramic Filter. More details for CBP-1023A+ can be seen below.