The RSF-173.075-132-7050-TR-49 from Raltron is a Band Pass Filter with Frequency 173.009 to 173.141 MHz, Bandwidth 0.132 MHz, Center Frequency 173.075 MHz, Insertion Loss 2.6 to 3.6 dB, Rejection 53 to 45 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-173.075-132-7050-TR-49 can be seen below.