The 6MB/E-40/H20-S5 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 28.1 to 51.9 MHz, Bandwidth 23.8 MHz (0.5dB), Center Frequency 40 MHz, Insertion Loss 0.57 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 6MB/E-40/H20-S5 can be seen below.