The 4MB/C-635/U55-14 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 602.5 to 667.5 MHz, Bandwidth 65 MHz (1dB), Center Frequency 635 MHz, Insertion Loss 1.6 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 4MB/C-635/U55-14 can be seen below.