The 5MB/C-350/U120-18 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 286.5 to 413.5 MHz, Bandwidth 127 MHz (1dB), Center Frequency 350 MHz, Insertion Loss 0.8 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 5MB/C-350/U120-18 can be seen below.