The DEI9590-5.00MHz from Dynamic Engineers is a Band Pass Filter with Frequency 3.6 to 6.4 MHz, Bandwidth 250 KHz, 2800 KHz, Center Frequency 5 MHz, Insertion Loss 6 dB, Rejection 50 dB @ -1500 KHz, 4500 KHz. Tags: Crystal Filter, Suspended Substrate Filter. More details for DEI9590-5.00MHz can be seen below.