The 4MB/C-1348/U50-14 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 1318 to 1378 MHz, Bandwidth 60 MHz (1dB), Center Frequency 1348 MHz, Upper Rejection 40 dB, Lower Rejection 40 dB. Tags: Lumped Component Filter. More details for 4MB/C-1348/U50-14 can be seen below.