The 4MB/C-140/U30-18 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 123.1 to 156.9 MHz, Bandwidth 33.8 MHz (1dB), Center Frequency 140 MHz, Insertion Loss 1.22 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 4MB/C-140/U30-18 can be seen below.