The SWF-G1S-KX-109A-xxxx from ETL Systems is a Block Upconverter with AC Voltage 85 to 264 VAC, Gain 3.6 to 33.6 dB, Gain Flatness ±0.6 to 1.8 dB, Image Rejection 60 dB, Impedance 50 Ohms. Tags: Rack Mount. More details for SWF-G1S-KX-109A-xxxx can be seen below.