The 4FS10-1575.42/U3-MCX from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 1570.42 to 1580.42 MHz, Bandwidth 10 MHz (1dB), Center Frequency 1575.42 MHz, Insertion Loss 1.39 dB, Upper Rejection 40 dB. Tags: Cavity Filter. More details for 4FS10-1575.42/U3-MCX can be seen below.