The 4MB/C-600/U40-S1G from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 576.5 to 623.5 MHz, Bandwidth 47 MHz (1dB), Center Frequency 600 MHz, Insertion Loss 1.8 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 4MB/C-600/U40-S1G can be seen below.