The 5MB/E-143.25/U5-18 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 136.02 to 150.48 MHz, Bandwidth 14.46 MHz (1dB), Center Frequency 143.25 MHz, Insertion Loss 2.9 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 5MB/E-143.25/U5-18 can be seen below.