The 4MB/C-925/U250-S4G from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 784 to 1066 MHz, Bandwidth 282 MHz (1dB), Center Frequency 925 MHz, Insertion Loss 0.6 dB, Upper Rejection 40 dB. Tags: Lumped Component Filter. More details for 4MB/C-925/U250-S4G can be seen below.