The 845-M from Berkeley Nucleonics Corp is a Frequency Synthesizer with Frequency 10 MHz to 20 GHz, Resolution 0.001 Hz, Reference Frequency 100 MHz, Output Power 18 to 26 dBm, Harmonics -75(Sub Harmonic) to -15 dBc(Output Harmonics). Tags: Benchtop, PLL Frequency Synthesizer. More details for 845-M can be seen below.