This spectrum analyzer is made of fine quality material, practical, easy to operate and use, has a long service life. With 2.8inch color touching display, and two inputs, MF/HF/VHF input for 0.1MHz-350MHz, and ultra-high frequency input for 260MHz-960MHz. Totally 4 operation modes design, low input mode, high input mode, low output mode, high output mode, you can adjust according to your demands. You can have a try. Features: 2.8inch color touching display showing 290 scan points covering up to the full low or high frequency ranges. Equipped with two inputs, MF/HF/VHF input for 0.1MHz-350MHz, and ultra-high frequency input for 260MHz-960MHz. With switchable resolution bandpass filters for both rangess 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, ultra-high frequency squarewave 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. Specifications: Name: Spectrum Analyzer Material: ABS Color: black Battery: 1 * lithium battery, 5V, 600mAh (included) Display resolution: 320*240 pixels Screen diagonal: 2.8inch Rechargeable interface: USB Type-C Item size: 100 * 62 * 18mm / 3.94 * 2.44 * 0.71in Item weight: 116g / 4.09ounce Package size: 130 * 100 * 40mm / 5.12 * 3.94 * 1.57in Package weight: 147g / 5.19ounce User interface: Display resolution 320*240 pixels Screen diagonal 2.8inch Resistive touching control Jog switch control USB serial port control Optional TTL USART port (SW not yet implemented) on the internal PCB Linear power supplys to refrain switching noise The input/output specification is split over the 4 modes. Low input mode spec: Input frequency rangesfrom 100KHz to 350MHz. Input impedance 50 ohm when input attenuation set to 10dB or more. Selectable manual and automatic input attenuation between 0dB and 31dB in 1dB step. Absolute maximum input level without attenuation of +10dBm. Absolute maximum input power with 30dB attenuation of +20dBm for short period. Input intercept point of third order modulation products (IIP3) with 0dB attenuation of +15dBm. 1dB compression point at +2dBm with 0dB attenuation. Power detector resolution of 0.5dB and linearityranges frequency of +/-1dB. Absolute power level accuracy after power level calibration of +/-1dB. Lowest discernible signal using a resolution bandwidth of 30KHz of -102dBm. Frequency accuracy equal to the selected resolution bandwidth. Phase noise of -90dB/Hz at 100KHz offset and -115dB/Hz at 1MHz offset. Spur free dynamic rangeswhen using a 30KHz resolution bandwidth of 70dB. Manually selectable resolution filters of 3, 10, 30, 100, 300, 600KHz. Automatic selection of one of the 57 resolution filters. On screen resolution of 145 or 290 measurement points. Scanning speed of over 1000 points/second using largest resolution filters. Automatic optimization of actual scanning points to ensure coverage of the whole scan rangesregardless of the chosen resolution bandwidth. Spur suppression option for assessing if certain signals are internally generated or actually present in the input signal. High input mode spec: Input frequency rangesfrom 260MHz to 960MHz. As there is no input bandfilter, strong input signals outside the 260MHz to 960MHz rangescan cause distortion of the in band signals. Absolute maximum input level without attenuation of +10dBm. Input intercept point of third order modulation products (IIP3) of -5dBm. 1dB compression point at -6dBm with no attenuation. Power detector resolution of 0.5dB and linearityranges frequency of +/-1dB. Absolute power level accuracy after power level calibration of +/-1dB. Lowest discernible signal using a resolution bandwidth of 30KHz of -115dBm. Frequency accuracy equal to the selected resolution bandwidth. Spur free dynamic rangeswhen using a 30KHz resolution bandwidth of 50dB. Manually selectable resolution filters of 3, 10, 30, 100, 300, 600KHz. Optional 25dB to 40dB frequency dependent input attenuator. The power level error with this attenuator activated increases to +/-15dB. On screen resolution of 145 or 290 measurement points. Scanning speed of over 1000 points/second using largest resolution filters. Automatic optimization of actual scanning