The HP / Agilent 8971C offers simple double sideband measurement and accurate single sideband measurements in a single unit. Broadband single sideband measurements from 10 MHz to 26.5 GHz with a single calibration and sweep are made possible because of the high performance components in the 8971C, including a stable YIG filter. A low noise preamplifier built into the Noise Figure Test Set lowers the second stage noise figure, which reduces a major source of measurement uncertainty. When paired with the measurement modes in an 8970B, double down-conversion  is possible because the 8971C acts as the second downconverter. These modes can be used for millimeter wave measurements of amplifiers and transistors and measurements of receivers and mixers with IFs above 1.6 GHz.

Other features and specifications of:

●10 MHz to 26.5 GHz frequency range

●Input SWR: 10 MHz to 18 GHz; 2.25 and 18 to 26.5 GHz; 2.7

●Gain 10 MHz to 26 GHz: 23 dB to 27 dB 

●+7 dBm Lo input power (Min) 

●Noise Figure (Max.): 10-30 MHz: 18 dB; 30-100 MHz: 13 dB; 0.1-12 GHz: 10 dB; 12-18 GHz: 11.5 dB; 18-26.5 GHz: 14.5 dB 

●Accurate broad band measurements from 10 MHz to 26.5 GHz are possible with a single calibration and sweep