The LFCN-1800D-1 from Mini Circuits is a Space Qualified RF Filter with Frequency DC to 1.8 GHz, Cut Off Frequency 2125 MHz, Stop Band Frequency 2550 to 8650 MHz, Power 10 W, Insertion Loss 0.03 to 0.74 dB. Tags: Surface Mount. More details for LFCN-1800D-1 can be seen below.