The 6MB/C-600/U30-18 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 583.05 to 616.95 MHz, Bandwidth 33.9 MHz (1dB), Center Frequency 600 MHz, Insertion Loss 2.8 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 6MB/C-600/U30-18 can be seen below.