The 4MB/C-14/U1-18 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 13.09 to 14.91 MHz, Bandwidth 1.82 MHz (1dB), Center Frequency 14 MHz, Insertion Loss 1.48 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 4MB/C-14/U1-18 can be seen below.