The FP30207-3 from Sinclair Technologies is a Band Pass Filter with Frequency 406 to 512 MHz, Insertion Loss 1 to 6 dB, Power 80 to 350 W, VSWR 1.50:1, Operating_Temperature -30 to 60 Degree C. Tags: Rack Mount, Cavity Filter. More details for FP30207-3 can be seen below.