Feature: 1. 200Hz to 850kHz RBW: When the RBW is up to 200Hz, adjacent signals can be effectively distinguished, meet the requirements of single sideband dual tone test. The maximum width of 850kHz RBW enables fast scanning. 2. Wide Output Range: ULTRA mode reaches 5.3GHz, 100k to 800MHz sine wave output, 800MHz to 4.4GHz square wave output, 4.4GHz to 5.4GHz mixed frequency signal output. 3. 4 Inch Display Screen: 4 inch TFT LCD display is adopted, this spectrum frequency analyzer is clearer to observe and easier to operate. 4. Battery and Storage Card: Built in 3000mA battery, 8 hour battery life to meet daily needs. With micro storage card, data can be saved at any time. 5. Low Noise: Excellent background noise DANL of 169dBm per Hz, separated signal ‑140dBm at 200Hz RBW(LNA ON). Specification: Item Type: Spectrum Frequency Analyzer Material: ABS Display Size: 4 inch TFT LCD Maximum Low Input Frequency: 800MHz, 6GHz in Ultra mode Level 1, 3 and 10 Resolution Filter: From 200Hz to 850kHz Maximum Output Frequency: Sine wave up to 800MHz, square wave up to 4.4GHz Output Level: -104dBm to -16dBm UItra Mode: Level calibration to 5.3GHz Internal LNA Gain: 20dB up to 4GHz Display Points Per Scan: Maximum 450 0-350MHz Scanning Time: 165ms Minimum Zero Span Time: 17ms DANL at 100MHz: 153dBm/Hz(LNA Off), -169dBm/Hz(UNA On) DANL Attenuation in Ultra Mode: 10dB above 2.5GHz, 25dB above 5.3GHz Phase Noise at 10kHz Offset: -92dBc/Hz Phase Noise at 100kHz Offset: -110dBc/Hz Input 1dB Compression Level: +0.5dBm (LNA Off), -26.5dBm (LNA On) IIP3 without LNA: 18dBm (at least 2MHz apart), 0dBm (500Hz apart) IIP3 with LNA: -8dBm (at least 2MHz apart) Frequency Stability: