The 5C7-1575.42-5S21 from Reactel is a Band Pass Filter with Frequency 1.57 to 1.58 GHz, Bandwidth 5 MHz, Center Frequency 1575.42 MHz, Insertion Loss 3.5 dB @ CF, Rejection 40 dB @ 1568.17 andamp 1582.67 MHz. Tags: Module with Connectors, Cavity Filter. More details for 5C7-1575.42-5S21 can be seen below.