1. Cancel the o encoder short press to exit the menu function, the function will not be affected in the menu interface, you can still adjust parameters such as volume or switch items, but only use the frequency encoder to short press to exit the menu.  2. In the menu interface, use the frequency encoder to adjust the project parameters.  3. Menu adjustment, increase EMI Reduction, WF GAMMA mode setting (WF GAMMA), remove the screen off setting after LCD sleep (SLEEP TIME).    10d version product details optimization description:  1: The PCB adopts a 4-layer board structure, which has better performance.  2: The outer casing and the shielding cover are double shielded, and the shielding effect is better.  3: The display is optimized, the touch chip is replaced, and the touch is more sensitive  4: Using mature cavity dual-diaphragm speakers, the sound effect is better  5: Battery circuit optimization, no standby power consumption, more durable battery  6: Select high-quality crystal oscillator to improve performance.  7: Improve the charging circuit to solve the problem that the battery cannot be charged and cannot be turned on.  8: The radio is ly built on the SDR, and the function is 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: Variable Filter Width, Adaptive Noise Suppressor, Threshold Noise Suppressor, Noise Bianker AGC Equalizer  Colour:black  Material:Aluminum alloy    Package Contents:  1 * SDR receiver (built-in cavity dual-diaphragm speakers)   1 * type-c charging cable   1 * antenna   1 * precision instrument screen cleaning cloth    Only the above package content, other products are not included.  Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.