The GS38 Series from GeoSync Microwave is a Low Noise Block with Input RF Frequency 2.15 to 22.2 GHz, Output RF Frequency 950 MHz to 2 GHz, LO Frequency 3.6 to 20.25 GHz, Gain 35 dB, Gain Flatness ±1 dB. More details for GS38 Series can be seen below.