The UBR-2LKu from GeoSync Microwave is a Block Upconverter with AC Voltage 90 to 250 VAC, Gain 30 dB, Image Rejection 60 dB, Impedance 50 Ohms, Input Frequency 950 MHz to 1.45 GHz, 950 MHz to 2 GHz. Tags: Rack Mount. More details for UBR-2LKu can be seen below.