The ADTFd 30/520-4S from ADMOTECH is a Tunable Filter with Frequency 30 to 520 MHz, Tunable Frequency 30 to 88 MHz / 108 to 520 MHz, Bandwidth 5 % (30 to 88 MHz) / 6 % (108 to 520 MHz), Rejection 15 to 20 dBc, Input Power 30 dBm. Tags: Surface Mount. More details for ADTFd 30/520-4S can be seen below.