The SG386 from SRS is a Signal Generator with Frequency 950 kHz to 6.075 GHz, Output Power -110 dBm to 16.5 dBm, Phase Noise -116 dBc/Hz, SSB Phase Noise -116 dBc/Hz, Harmonics <-40 dBc. Tags: Analog Signal Generator. More details for SG386 can be seen below.