Brand new and high quality Function: Made from fine quality materials, it is practical, easy to use and operate, and has a long service life. Features a dual-input spectrum analyzer with a fine quality MF/HF/VHF input for 0.1MHz-350MHz and a lower quality UHF input for 240MHz-960MHz. Offers switchable resolution bandpass filters for both ranges, from 2.6KHz to 640KHz. Includes a color display showing 290 scan points, covering the entire low or high frequency range. Features an input step attenuator from 0dB to 31dB for the MF/HF/VHF input. When not used as a spectrum analyzer, it can function as a signal generator, providing MF/HF/VHF sine wave output between 0.1MHz-350MHz and UHF square wave output between 240MHz-960MHz. Includes a built-in calibration signal generator for automatic self-test and low input calibration. When connected to a PC via USB, it becomes a PC-controlled spectrum analyzer. Features a rechargeable battery that allows for at least 2 hours of portable use. Low Input Mode Specs: 1. Input frequency range from 100kHz to 350MHz. 2. Input impedance is 50 ohms when input attenuation is set to 10dB or more. 3. Selectable manual and automatic input attenuation from 0dB to 31dB in 1dB steps. 4. Absolute maximum input level without attenuation is +10dBm. 5. Absolute maximum input power with 30dB attenuation is +20dBm for a short period. 6. Third-order intermodulation products input intercept point (IIP3) at 0dB attenuation is +15dBm. 7. 1dB compression point at +2dBm with 0dB attenuation. 8. Power detector resolution of 0.5dB and linearity versus frequency of +/-1dB. 9. Absolute power level accuracy after power level calibration is +/- 1dB. 10. Lowest discernible signal with a 30kHz resolution bandwidth is -102dBm. 11. Frequency accuracy is equal to the selected resolution bandwidth. 12. Phase noise is -90dB/Hz at 100kHz offset and -115dB/Hz at 1MHz offset. 13. Spur-free dynamic range using a 30kHz resolution bandwidth is 70dB. 14. Manually selectable resolution filters are 3, 10, 30, 100, 300, 600kHz. Automatic selection of one of the 57 resolution filters. 15. Display resolution is 145 or 290 measurement points. 16. Scan speed exceeds 1000 points/second with the largest resolution filters. 17. Automatic optimization of actual scan points to ensure coverage of the entire scan range regardless of the selected resolution bandwidth. 18. Spur attenuation option to assess if certain signals are internally generated or actually present in the input signal. High Input Mode Specs: 1. Input frequency range from 240MHz to 960MHz. 2. As there is no input band filter, strong signals outside the 240MHz to 960MHz range can cause distortion of signals within the band. 3. Absolute maximum input level without attenuation is +10dBm. 4. Third-order intermodulation products input intercept point (IIP3) is -5dBm. 5. 1dB compression point at -6dBm with 0dB attenuation. 6. Power detector resolution of 0.5dB and linearity versus frequency of +/-1dB. 7. Absolute power level accuracy after power level calibration is +/- 1dB. 8. Lowest discernible signal with a 30kHz resolution bandwidth is -115dBm. 9. Frequency accuracy is equal to the selected resolution bandwidth. 10. Spur-free dynamic range using a 30kHz resolution bandwidth is 50dB. 11. Selectable (automatic and manual) resolution filters are 3, 10, 30, 100, 300, and 600kHz. 12. Optional 25dB to 40dB frequency-dependent input attenuator. The power level error with this attenuator activated increases to +/- 15dB. 13. Display resolution is 145 or 290 measurement points. 14. Scan speed exceeds 1000 points/second with the largest resolution filters. 15. Automatic optimization of actual scan points to ensure coverage of the entire scan range regardless of the selected resolution bandwidth. Low Output Mode Specs: 1. Sine wave output with harmonics below -40dB of the fundamental. 2. Output frequency range from 100kHz to 350MHz. 3. Output level is selectable in 1dB steps between -76dBm and -6dBm. 4. Optional AM, narrow FM, and wide FM modulation or slow sweep over a selectable frequency range. High Output Mode Specs: 1. Square wave output. 2.