The Instek USGLF44 RF Signal Generator is a pocket-sized and USB interface compatible RF signal generator with the frequency range from 34.5 MHz to 4.4 GHz. The USG-Series provides continuous wave (CW) signal outputs without any signal modulation function. The built-in electronic attenuator of the USG-Series allows an adjustable power range from -30 dBm to 0 dBm. The USG-Series has several operational modes including fixed frequency, frequency sweep, frequency hopping, and power sweep.