The DEI2698-18.10MHz from Dynamic Engineers is a Band Pass Filter with Frequency 18.097 to 18.103 MHz, Bandwidth 6 kHz, Center Frequency 18.1 MHz, Insertion Loss 4 dB, Rejection 80 dB@±75 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DEI2698-18.10MHz can be seen below.