The DEI9856-73.50MHz from Dynamic Engineers is a Band Pass Filter with Frequency 73.4975 to 73.5025 MHz, Bandwidth 5 kHz, Center Frequency 73.5 MHz, Insertion Loss 4 dB, Rejection 30 dB@±60 kHz of Center Frequency. Tags: Surface Mount, Through Hole, Crystal Filter. More details for DEI9856-73.50MHz can be seen below.