The 865-M from Berkeley Nucleonics Corp is a Frequency Synthesizer with Frequency 100 KHz to 40 GHz, Resolution 0.001 Hz, Reference Frequency 10 to 100 MHz, Output Power 20 dBm, Harmonics -75 to -30 dBc(Sub Harmonic) to -15 dBc(Output Harmonics). Tags: Benchtop, Tunable Frequency. More details for 865-M can be seen below.