The Model 845-26 is a low-noise and fast-switching microwave signal generator covering a continuous frequency range from as low as 100 kHz up to 26.5 GHz with a 0.001 Hz resolution. The Model 845-26 is a wide and accurately levelled output power range and high spurious suppression. Advanced frequency synthesis with fractional-N divider makes for low SSB phase noise and micro-Hz resolution.