The 1232 MHz Ceramic Filter from Networks International Corporation is a Band Pass Filter with Frequency 1.23 GHz, Bandwidth 136MHz, Insertion Loss Less than 3 dB, Rejection 45dBc @ 1010 MHz 45dBc @ 1800-2500 MHz, VSWR 1.50:1. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for 1232 MHz Ceramic Filter can be seen below.