The ECS-75SMF70.05A20B from ECS Inc. International is a Band Pass Filter with Frequency 70.04 to 70.06 MHz, Bandwidth 10 kHz, Center Frequency 70.05 MHz, Insertion Loss 4 dB, Rejection 70 dB. Tags: Surface Mount, Crystal Filter. More details for ECS-75SMF70.05A20B can be seen below.