The 4MB/C-140/U8-18 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 135.55 to 144.45 MHz, Bandwidth 8.9 MHz (1dB), Center Frequency 140 MHz, Insertion Loss 3.5 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 4MB/C-140/U8-18 can be seen below.