The FIS-50 from Synergy Microwave Corporation is a Band Pass Filter with Frequency 45.8 to 54.3 MHz, Bandwidth 35 to 65 MHz @ 20 dB, 15.8 to 150 MHz @ 40 dB, Center Frequency 50 MHz, Insertion Loss 1.5 dB, Power 1 W. Tags: Surface Mount. More details for FIS-50 can be seen below.