The GS64 Series from GeoSync Microwave is a Low Noise Block with Input RF Frequency 37.5 to 42.5 GHz, Output RF Frequency 950 MHz to 1.95 GHz, LO Frequency 36.05 to 40.05 GHz, Gain 36 dB, Noise Figure 20 dB. More details for GS64 Series can be seen below.
