The 8671A Microwave Frequency Synthesizer covers the frequency range of 2 to 6.2GHz in 1kHz steps with excellent stability and spectral purity. It is well suited for most LO applications that require state-of-the-art performance as well as broadband capability. Spurious responses >70 dB below carrier. 10MHz time base <5 x 10E-10/day stability aging. +8 dBm min output power. HP-IB. FM & peak deviation up to 10MHz.