The RSF-780.000-44500-1109-TR-NS1 from Raltron is a Band Pass Filter with Frequency 757.75 to 802.25 MHz, Bandwidth 44.5 MHz, Center Frequency 780 MHz, Insertion Loss 1.6 to 2.5 dB, Rejection 44 to 17 dB. Tags: Surface Mount, RF SAW Filter. More details for RSF-780.000-44500-1109-TR-NS1 can be seen below.