The DEI9827-30.00MHz from Dynamic Engineers is a Band Pass Filter with Frequency 29.959 to 30.041 MHz, Bandwidth 82 kHz, Center Frequency 30 MHz, Insertion Loss 5 dB, Rejection 15 dB@±50 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DEI9827-30.00MHz can be seen below.