The HFCN-3500D from Mini Circuits is a Space Qualified RF Filter with Frequency 3.9 to 9.8 GHz, Cut Off Frequency 3500 MHz, Stop Band Frequency 2800 to 2900 MHz, Power 7 W, Insertion Loss 1.5 to 2 dB. Tags: Surface Mount. More details for HFCN-3500D can be seen below.