The TLT137 from Peak Communications is a Ku-Band to L-Band Test Loop Translator that converts an input Tx frequency from 13.75 to 14.5 GHz to an output Rx frequency from 950 to 1700 MHz. The TLT has high stability and excellent phase noise of -100 dBc/Hz @ 10 kHz. It has an optional 0 to 30 dB variable attenuator control that is used to balance the incoming power with the monitoring system. The unit is available in 19-inch 1'U' high chassis, suitable for rack mounting, is 400 mm deep and may be fitted with rack slides.