The DEI9769-37.50MHz from Dynamic Engineers is a Band Pass Filter with Frequency 37.4895 to 37.5105 MHz, Bandwidth 21 kHz, Center Frequency 37.5 MHz, Insertion Loss 2.5 dB, Rejection 50 dB@±140 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DEI9769-37.50MHz can be seen below.