The DEI9594-10.50MHz from Dynamic Engineers is a Band Pass Filter with Frequency 9 to 12 MHz, Bandwidth -300 KHz, -3000 KHz, Center Frequency 10.5 MHz, Insertion Loss 4 dB, Rejection 60 dB @ - 1500 KHz, 5000 KHz. Tags: Crystal Filter, Suspended Substrate Filter. More details for DEI9594-10.50MHz can be seen below.