The DEI5764-1.4MHz from Dynamic Engineers is a Band Pass Filter with Frequency 1.39925 to 1.40075 MHz, Bandwidth 1.5 KHz, Center Frequency 1.4 MHz, Insertion Loss 5 dB, Rejection 50 dB @ 4.2KHz. Tags: Through Hole, Crystal Filter. More details for DEI5764-1.4MHz can be seen below.