The HFCG-4000+ from Mini Circuits is a RF High Pass Filter with Frequency 4500 to 18000 MHz, Insertion Loss 0.8 to 2 dB, Power 3 W, Rejection 25 to 42 dB, Lower Rejection 25 to 42 dB @DC to 3200 MHz. Tags: Surface Mount, Ceramic Filter. More details for HFCG-4000+ can be seen below.