The RSF-138.240-20000-7050-TR from Raltron is a Band Pass Filter with Frequency 126.39 to 150.09 MHz, Bandwidth 23.7 MHz, Center Frequency 138.24 MHz, Insertion Loss 9.6 to 11.5 dB, Rejection 75 to 40 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-138.240-20000-7050-TR can be seen below.