The FS080 ultra-low noise frequency multiplier can be used with state-of-the-art crystal frequency sources without degrading phase noise or environmental stability. The FS080 provides eight times the input frequency while maintaining spurious signal levels below -55 dBc. Outputs at X2, and X4 the input frequencies are available as an option. The FS080 is ideal for phase locking crystal sources with 5 or 10 MHz references. The FS080 is available in a stand-alone enclosure, NIM module or aluminum enclosures.