USB Controlled RF Signal Generators By 

SynthHD Pro 54 MHz - 13.6 GHz Dual Channel Microwave Generator

SynthHD 54 MHz - 13.6 GHz Dual Channel Microwave Generator

SynthNV 34 MHz - 4.4 GHz RF Signal Generator with Power Detector

SynthUSBII 34MHz – 4.4GHz USB RF Signal Generator