Feature:1. Real-time spectrum analysis function: real-time spectrum scanning, SPAN/RBW/CENT/MARKER function, MAXHLOD function, automatic maximum power detection.2. Function of frequency chromatogram: it shows the whole time and spectrum characteristics within a period of time, and can record all spectrum distributions within 5 minutes cyclically, so as to facilitate the inspection of frequency interference, emission leakage and other problems.3. Spectrum thermodynamic diagram function: it shows the overlapping density of spectrum contour in a period of time, and the frequency of repetition tends to be red, which is convenient for analyzing the spectrum statistical characteristics in a period of time.4. Portable spectrum analyzer, built-in lithium battery, small size and lightweight, using the standard 5V charger can be charged, full charge can last about 9 hours.5. It's widely uesd in rf testing, wireless optimization, field networking, interference query, etc.Specification:Condition: 100% Brand NewItem Type: Spectrum AnalyzerMaterial: ABS+MetalColor: As shown in the pictureWeight: Approx.515g/18.2ozIndexParameter rangeModelXT-239-ATS11 ( typical value)-31dBmFrequency range(MHz)2.3~2.9GHzIn-band unevenness0.5dB(after calibration)RBW(kHz)20, 30, 50, 100, 200 and 300kH(minimum)DANL(average bottom noise)-110dBmtypical valueAmplitude precision+-0.5dBmScanning time200msMAXHOLD functionSupportReference level adjustableSupportDisplay refresh frequency5Hz(refresh 5 screens per second)LCD resolutionTFT 800480LCD size5inRadio frequency interfaceSMA-KChromatogramSupportAT functionSupportThermodynamic diagramSupportBuilt-in RTC clockSupportBattery capacity3300mAhtypicalBattery type18650 lithium batteryCharging time45 hourCharging interfaceMicro USB interfaceBattery life9 hourSize135x101x30mm / 5.3x4.0x1.2in(excluding knob and antenna height)Operating temperature-2045Storage temperature-2070Signal range-100 ~ -10dBm(large signal and attenuator enter)Package List:1 x Spectrum Analyzer1 x English Manual1 x Antenna1 x Data Cable1 x Power Plug1 x Antenna Nut1 x USB Serial Port ModuleNote:1. Please allow 1-2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.