Feature: 1. Upgrade Functions: Full band SDR receiver, adjust engineering parameters according to frequency encoder and exit menu, add EMI, cancel the screen shutdown setting after LCD sleep. 2. Frequency Range: The frequency range is 50kHz to 250MHz and 400MHz to 2GHz, with a clock frequency of 480MHz, uses multifunctional chip MSI001, the dynamic blocking range is about 85dB. 3. Noise Reduction: This radio receiver adopts excellent crystal oscillator, 4 layer board structure, built in variable filter width, adaptive noise suppressor, threshold noise suppressor, and noise equalizer. 4. Power Supply: The shortwave receiver is powered by external Type C interface, with built in 2200mAh battery. Can be connected to a computer for transmission through USB, CAT, IQ, and audio connection. 5. High Sensitivity: The SDR receiver features a 3.5 inch IPS touch screen, optimized screen and touch chip to ensure high sensitivity. Up to 250MHz, the sensitivity of the receiver is 0.3??V at s/w. 6. Good Shielding: The SDR radio receiver adopts dual shielding (shell and shielding layer) coverage, which has better noise shielding effect, built in receiving module improves the high frequency reception of the antenna. Specification: Item Type: SDR Receiver Material: Aluminum Alloy Version: 1.10D (Latest Registered Version) Screen: 3.5 Inch Capacitive Touch Screen Standard Frequency Range: 50kHz to 2GHz Demodulation Mode: AM SSB(LSB USB) NFM WFM Analog Modulation Power Supply: 1x 3.7V Lithium Battery, 2200mAh (Included) Additional Features: EMI Reduction, WF GAMMA Mode Setting Add Features: 1. Canceling the audio encoder short press to exit the menu function does not affect the original function in the menu interface. You can still adjust parameters such as volume or switch items, and can only use the frequency encoder short press to exit the menu. 2. In the menu interface, use a frequency encoder to adjust project parameters. 3. Menu adjustment, adding EMI Reduction and WF GAMMA mode settings, and removing the LCD sleep screen shutdown setting (SLEEP TIME). Product Details: 1. The PCB adopts 4 layer board structure, which has superior performance. 2. Dual shielding cover for better shielding effect. 3. Display screen optimization, replaced with touch chip for more sensitive touch 4. Use mature cavity dual diaphragm speakers for better sound effect 5. Optimized battery circuit, no standby power consumption, and more durable batteries 6. Select excellent crystal oscillators to improve performance. 7. Improve the charging circuit to solve the problem of the battery not being able to charge and not turning on. 8. The radio is based on the original construction of SDR, and its functions are determined by the loaded software. 9. Frequency range from 50kHz to 250MHz and 400MHz to 2GHz (registered upgrade version) 10. All types of analog modulation: AM SSB (LSB USB) NFM WFM 11. Powerful features: variable filter width, adaptive noise suppressor, threshold noise suppressor, Noise Bianker AGC equalizer 12. Use a fully functional chip MSI001 13. The powerful for STM32h743 with a clock frequency of 480MHz has been applied. 14. 3.5 inch IPS display touch screen. 15. There is a built in UHF. 16. Control 2 encoders with buttons and touch screen. 17. The power supply is powered by an external TYPE C interface, which can be charged through the TYPE C interface. 18. The earphone mode consumes a current of 300mA. 19.