Features: 2.8inch color touching display showing 290 scan points covering up to the full low or high frequency range. Equipped with two inputs, MF/HF/VHF input for 0.1MHz-350MHz, and UHF input for 260MHz-960MHz. With switchable resolution bandpass filters for both ranges between 2.6KHz and 640KHz. Input step attenuator from 0dB to 31dB for the MF/HF/VHF input. It not only can be used as spectrum analyzer but also can be used as signal generator, MF/HF/VHF sinus output between 0.1MHz-350MHz, UHF square-wave output between 260MHz-960MHz. A built-in calibration signal generator that is used for automatic self test and low input calibration. Totally 4 operation modes design, low input mode, high input mode, low output mode, high output mode, you can adjust according to your demands. Connected to a PC via USB it becomes a PC controlled spectrum analyzer. The built-in USB Type-C rechargeable battery allowing a minimum of at least 2 hours portable use. Two types optional, you can choose with antenna and without antenna according to your demands.