The 1200BP44A575 is a high frequency ceramic band pass filter that operates from 950 to 1525 MHz. It has an insertion loss of 2.8 dB and an isolation of 25 dB at 480 MHz and at 1900 MHz. The filter is matched to 50 ohms and can handle up to 500 mW of power. It can operate at a temperature from -40 to 85 deg C.