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High-Sensitivity Full-Band Radio with FM, AM, and Shortwave Reception
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Description
Product Introduction
This is a high-sensitivity radio based on NXP’s high-performance automotive-grade TEF6686 chip, featuring exceptional selectivity and ultra-high sensitivity.
The DSP tuner offers a wide range of functions and advanced algorithms—such as CEQ, EMS, IMS, and PACS, along with a noise suppressor—enabling software-defined radio signal processing. It delivers outstanding performance especially in multipath interference correction, adjacent channel rejection, weak signal enhancement, and noise reduction.
Basic Specifications
Main Controller Chip: ESP32-WROOM-32U with 4MB Flash
Display Technology: 2.8-inch IPS full-view LCD with 320×240 resolution, equipped with resistive touch
Control Method: Default input via numeric keypad and rotary tuning; also compatible with third-party touchscreen firmware
Antenna Interface: External antenna for all frequency bands, standard SMA female connector.
Speaker Output: Uses TI audio amplifier chip TPA6211A1 to drive a 45x45mm large speaker cavity, with power output of 42/3W. It provides lower output noise and minimal distortion.
Headphone Output: Uses AD headphone amplifier chip MAX97220, with standard 3.5mm audio jack output. The speaker and headphone outputs are independently powered by dual amplifiers, optimized separately to avoid interference.
Battery Parameters: 3.7V/5000mAh, 18.5Wh, lithium battery size: 65x55x10mm.
Current Consumption: Approximately 3.7V/350mA, with a usage time of around 15 hours.
Communication Interface: Built-in CH340 USB-to-serial chip, external communication via TYPE-C interface.
Dimensions & Weight: Length: 142mm, Width: 30mm, Height: 80mm (excluding antenna connector and antenna), Body weight: 300g.
Operating Instructions
Basic Operations:
Main Switch:
This is the main power switch. The OFF position disconnects the battery, and the ON position connects the battery.
When not using the device for a long time, set the switch to OFF to prevent accidental power-on.
POWER Button:
Power button, short press to toggle between ON and OFF states.
TUNING Knob:
Rotate to adjust the frequency. A short press switches between stepping modes, while a long press activates iMS and EQ.
VOLUME Knob:
Adjust the volume.
SQL Gear:
Adjust the squelch level.
BW Button (Bandwidth Selection):
Short press in FM mode: Switch between stereo/mono.
Long press in FM mode: Switch between demodulation bandwidths (56/64/72/84/97/114/133/151/168/184/200/217/236/254/287/311kHz/AUTO BW). You can also hold the BW button and use the TUNING knob to select the bandwidth.
Short press in AM mode: Switch between demodulation bandwidths (3/4/6/8 kHz).
MODE Button (Tuning Mode):
Short press: Switch between MAN (manual tuning), AUTO (automatic search), and MEM (memory) modes.
Long press: Open the menu page.
BAND Button (Band Selection):
Short press: Switch between LW (Long Wave), MW (Medium Wave), SW (Short Wave), OIRT, and FM bands.
Long press in FM mode: Open advanced RDS/Alternative Frequency view. Hold for more than 5 seconds to enter sleep mode or turn off the display.
Saving Preset Stations:
Tune to the station you wish to save in the preset.
Switch to MEM mode by pressing the MODE button until “MEM” is highlighted.
Press the TUNING button; “MEM” will turn red.
Select the desired preset channel. The color indicates the status: red means a frequency is stored, green means no frequency is stored on that preset.
Press the TUNING button again to store the preset.
Advanced Operations:
Change Encoder Direction:
When powered on, press and hold the BW button.
Rotate Screen:
When powered on, press and hold the MODE button.
Restore Default Settings:
When powered on, press and hold both the BW and TUNING knobs.
External Keyboard:
Numeric Keys (0-9): Enter the corresponding frequency values.
DX Button: Start/stop FMDX scan.
Enter Key: Confirm input.
Additional information
| color | Black, Red, White, Yellow |
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