The RSF-1582.400-31240-1109-TR from Raltron is a Band Pass Filter with Frequency 1566.78 to 1598.02 MHz, Bandwidth 31240 kHz, Center Frequency 1582.4 MHz, Insertion Loss 1.0 to 2.0 dB, Rejection 43 to 20 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-1582.400-31240-1109-TR can be seen below.