TEF6686 3.2 Inch DSP Radio Full Band Radio FM Full Band DSP FM/AM Bluetooth 5.0 LNA Highly Sensitive Receiver

Signal enhancement of 20dB! Optional LNA preamplifier, exclusive configuration of low-noise preamplifier (LNA), one-click opening can increase the signal strength by 20 times (20dB), weak stations can be clearly heard, and the DX long-distance reception effect is significantly upgraded Flagship TEF6686 chip + 5.0 latest hardware adopts TEF6686 professional DSP chip, with super anti-interference ability; equipped with the latest 5.0 hardware architecture, supports full-band (FM/MW/SW) stable reception Immersive sound quality: sound cavity single speaker + passive diaphragm upgrade high-fidelity sound cavity single speaker + passive diaphragm technology, transparent and full sound quality, lower power consumption! More power-saving than dual speaker design, more shocking listening experience 5000mAh huge battery + intelligent charging and discharging management Built-in 5000mAh super large lithium battery, long battery life; support real-time voltage display (automatic reminder of low voltage), charging red light prompt, full power green light display, power safety at a glance volume (audio level) Converter offset (LO frequency of any converter used) Lower band edge (lowest frequency that can be selected) Upper band edge (highest frequency that can be selected/possible) Level offset (deviation of the signal meter due to cable loss or antenna amplifier/converter gain) Stereo separation threshold (adjusts channel separation if signal strength falls below this value) High frequency cutoff (cutoff frequency for the treble portion of weak signals) High frequency cutoff threshold (related to the previous item, this is the signal value below which the high frequency cutoff is enabled) Low level threshold (if the signal gets very weak, data crosstalk across the circuit may be audible. Use this option to delay the weak signal data stream, ideal for DX long-distance reception) Screen brightness (TFT contrast) Important note: Flashing the firmware yourself is not recommended. (