The HFCN-1000 from Mini Circuits is a Space Qualified RF Filter with Frequency 1.18 to 4 GHz, Cut Off Frequency 1000 MHz, Stop Band Frequency DC to 740 MHz, Power 7 W, Insertion Loss 1.4 to 2 dB. Tags: Surface Mount. More details for HFCN-1000 can be seen below.