The 6MB/E-665/U570-S9 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 341.35 to 988.65 MHz, Bandwidth 647.3 MHz (1dB), Center Frequency 665 MHz, Insertion Loss 0.46 dB, Upper Rejection 35 dB. Tags: Lumped Component Filter. More details for 6MB/E-665/U570-S9 can be seen below.