The CF-05000405 from Filtronetics is a Band Pass Filter with Frequency 480 to 520 MHz, Bandwidth 40 MHz, Center Frequency 500 MHz, Insertion Loss 1.5 to 2 dB, Rejection 12 to 65 dB. Tags: Surface Mount, Ceramic Filter, Dielectric Filter. More details for CF-05000405 can be seen below.