Full band radio receiver TEF6686 digital high sensitivity FM AM radio

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TEF6686 is a professional portable full-band digital radio receiver that uses the TEF6686 core radio chip, integrates DSP digital signal processing + SDR software radio technology, covers the full frequency band of FM/MW medium wave/SW short wave/LW long wave, and has professional functions such as RDS radio decoding, WiFi expansion, stereo output, remote control operation, and external antenna; metal portable body, built-in speaker + 3.5mm The headphone stereo output is suitable for professional reception by radio enthusiasts, casual listening at home, and outdoor camping use. It is also a retro gift and collectible radio. The net weight of the whole machine is only 0.95kg, which is light and easy to carry.

Core frequency band coverage (highly sensitive reception in all bands)

The machine supports 5 major broadcast frequency bands, has strong signal reception capabilities, and supports external antennas to further improve long-distance reception:

• FM frequency modulation: 65–105MHz, supports RDS radio information decoding and stereo output;
• MW medium wave (AM amplitude modulation): 520–1720KHz;
• LW long wave: 144–513KHz;
• SW shortwave: 1.7MHz–27MHz, covering global shortwave broadcasting;

The technology is equipped with DSP digital noise reduction, SDR software radio demodulation, and a telescopic rod antenna + external antenna interface. It can clearly receive sound in weak signal environments and reduce noise interference.

Body interface and hardware configuration (full-featured layout on the back)

The whole machine has an aluminum alloy metal body, with all expansion interfaces integrated on the back, and has passed CE and FC safety certifications:

1. Telescopic telescopic rod antenna + external antenna interface: standard telescopic rod antenna, reserved external antenna jack, long-distance reception can be combined with a gain antenna to enhance the signal;
2. WiFi antenna: built-in WiFi module, supports network expansion function;
3. 3.5mm stereo headphone jack: Plug in headphones and automatically switch to stereo for private listening without disturbing others;
4. Type-C USB charging port: universal USB charging, can be used for power supply at home and outdoors;
5. Main power switch: independent ON/OFF toggle switch, making power outage more worry-free;
6. Double-sided opening speakers: symmetrical sound holes on the left and right to achieve stereo sound quality;
7. Front components of the fuselage: color digital display, large metal volume adjustment knob, four function buttons MODE/STA/BW/Power.

Detailed explanation of core functional highlights

1. DSP+SDR dual digital demodulation, professional-grade radio performance

• Equipped with digital signal processing DSP noise reduction and SDR software radio demodulation technology, the bandwidth BW and squelch SQ parameters can be adjusted to filter interference clutter; the screen displays professional parameters such as frequency, signal strength dBuv, signal-to-noise ratio, station RDS text, stereo status, temperature, etc. in real time, allowing radio enthusiasts to fine-tune the receiving parameters.

2. Full-color large-screen visual operation

• The front high-definition color display screen intuitively displays: current frequency, signal strength, signal-to-noise ratio, RDS station name, PTY program type, ambient temperature, stereo logo, bandwidth mode, squelch value and other data. The tuning process data is refreshed in real time, making the operation clear at a glance.

3. Multifunctional large solid knob + body buttons

The oversized metal damping knob is used for both channel and volume adjustment, and the rotation feels smooth; there are four physical buttons below:

• MODE: Band switching (FM/LW/MW/SW/DSP/SDR mode switching)
• STA: automatic station search, radio station storage and reading
• BW: receiving bandwidth switching, adapting to strong and weak signals
• Power: body switch

4. Infrared full-function remote control (remote control distance ≥8 meters)

Equipped with an infrared remote control, it can be operated from a long distance without touching the body. Complete key functions:

• Power, mute, band switching (FM/AM), menu OK to confirm;
• Channel up and down, volume addition and subtraction, squelch SQ±, bandwidth/stereo switching;
• 0-9 digital buttons: directly input the precise frequency and quickly jump to the target radio station;
• DX, backspace key: confirm/cancel frequency input, greatly improving operating efficiency.

5. Stereo dual mode output

• External amplifier: Stereo public amplifier with speakers on both sides, allowing multiple people to listen at home;
• Private enjoyment: 3.5mm headphone jack, independent stereo output after plugging in, without disturbing others late at night or in the office.

6. Practical and convenient functions

• RDS broadcast decoding: FM band automatically reads station name and program information;
• Automatic station search + radio station memory: Automatically scan all-band radio stations with one click, automatically store, and memory will not be lost when power is turned off;
• Scheduled automatic shutdown: One-click to set sleep shutdown, no need to manually turn off the power when listening before going to bed;
• Real-time display of ambient temperature: the screen displays the indoor temperature simultaneously;
• WiFi expansion function: comes with WiFi antenna to support network expansion services;
• The Type-C rechargeable lithium battery is built-in, so it can be used portable without power supply. The whole machine weighs only 0.95kg, so it is no burden to carry around.

Summary of product core advantages

1. Full band coverage: FM/MW/SW/LW four major broadcast bands, which can be received by radio stations around the world;
2. Professional radio chip: TEF6686 solution, DSP noise reduction + SDR software demodulation, weak signal reception is clear;
3. Complete expansion capabilities: external antenna, WiFi, 3.5mm headphones, Type-C charging, full expandability;
4. Convenient dual operation: body knob button + 8-meter long-distance infrared remote control, digital button direct frequency input;
5. Visual color screen: all parameters are displayed in real time, and signal, temperature, and RDS radio information are clear at a glance;
6. Stereo dual output: external speakers + headphone stereo, taking into account sharing and private enjoyment;
7. Portable metal body: only 0.95kg lithium battery rechargeable model, suitable for desktop and outdoor use;
8. Multifunctional additional design: automatic channel search memory, scheduled shutdown, RDS decoding, bandwidth/noise fine adjustment, both professional and easy to use;
9. Strong gift attributes: retro and exquisite appearance, suitable for gift giving, desktop decoration, and radio collection.