The FP20207-1-4 from Sinclair Technologies is a Band Pass Filter with Frequency 126 to 132 MHz, Insertion Loss 1 to 3 dB, Power 185 to 350 W, VSWR 1.50:1, Operating_Temperature -30 to 60 Degree C. Tags: Rack Mount, Cavity Filter. More details for FP20207-1-4 can be seen below.