The 5MB/E-30/H8-14 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 20 to 40 MHz, Bandwidth 20 MHz (0.5dB), Center Frequency 30 MHz, Insertion Loss 0.3 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 5MB/E-30/H8-14 can be seen below.