The RCF-1580.000-60000-1109-W-001 from Raltron is a Band Pass Filter with Frequency 1.55 to 1.61 GHz, Insertion Loss 1.9 dB, Rejection 25 dB / 8 to 35 dB, Upper Rejection 8 to 35 dB, Lower Rejection 25 dB. Tags: Surface Mount, Ceramic Filter. More details for RCF-1580.000-60000-1109-W-001 can be seen below.