The WF-G1S-KX-109A-xxxx from ETL Systems is a Block Upconverter with AC Voltage 85 to 264 VAC, Gain 1.3 to 31.3 dB, Gain Flatness ±0.35 to 2 dB, Image Rejection 60 dB, Impedance 50 Ohms. Tags: Rack Mount. More details for WF-G1S-KX-109A-xxxx can be seen below.