The DEI5794-1621.25MHz from Dynamic Engineers is a Band Pass Filter with Frequency 1616 to 1626.5 MHz, Bandwidth 10.5 MHz, Center Frequency 1621.25 MHz, Insertion Loss 4 dB, Rejection 35 dB@DC ~ 1609.5MHz to 45dB @ 1635 ~ 3500MHz. Tags: Module with Connectors, Cavity Filter. More details for DEI5794-1621.25MHz can be seen below.