{"product_id":"hamgeek-tef6686-ultra-portable-radio-fm-lw-mw-sw-ssb-usb-lsb-receiver-2-8-inch-c","title":"HamGeek TEF6686 ULTRA Portable Radio FM LW MW SW SSB USB LSB Receiver 2.8 Inch Color Screen","description":"\u003cdiv\u003e\u003cb\u003eDescription:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003eThe HamGeek TEF6686 ULTRA is a portable multi-band radio receiver powered by the automotive-grade TEF6686 receiver chip for NXP. In addition to standard AM\/FM reception, it supports SSB (Single Side-band) demodulation, including USB (Upper Side-band) and LSB (Lower Side-band) reception.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eThe radio features a 2.8-inch color LCD display, providing dynamic information such as station names, program information, and signal status for a more convenient user experience.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eDesigned with an integrated portable structure, the device measures 115 x 68 x 27mm and weighs approximately 140g, making it compact and easy to carry. It supports charging via a USB charger or computer USB port and is equipped with a standard SMA antenna connector and a 3.5mm stereo headphone output.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* TEF6686 ULTRA with USB \u0026amp; LSB Support: The HamGeek TEF6686 ULTRA is built on the TEF6686 automotive-grade receiver platform, with added USB and LSB demodulation support, providing enhanced SSB reception capabilities.\u003c\/div\u003e\u003cdiv\u003e* Five Reception Modes: Supports FM, LW, MW, SW, and SSB, offering versatile reception across multiple radio bands.\u003c\/div\u003e\u003cdiv\u003e* Advanced SSB Tuning Functions: Supports USB\/LSB switching, BFO fine adjustment with 10Hz resolution, 6 selectable bandwidth levels, and SYNC synchronous detection for flexible SSB reception.\u003c\/div\u003e\u003cdiv\u003e* 2.8-Inch Color LCD Display: Features a 2.8-inch color LCD screen displaying station names, program information, frequency, bandwidth, and signal status. Multiple interface themes and adjustable backlight brightness are also supported.\u003c\/div\u003e\u003cdiv\u003e* Compact \u0026amp; Portable Design: The HamGeek TEF6686 ULTRA measures 115 x 68 x 27mm and weighs approximately 140g. It features a 2500mAh rechargeable lithium-ion battery, USB Type-C charging, an SMA antenna connector, and a 3.5mm stereo headphone output.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003eBasic Specifications:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* Brand: HamGeek\u003c\/div\u003e\u003cdiv\u003e* Product Model: TEF6686 ULTRA\u003c\/div\u003e\u003cdiv\u003e* Receiver Chip: TEF6686 Automotive-Grade Receiver Chip for NXP\u003c\/div\u003e\u003cdiv\u003e* Dimensions: 115 x 68 x 27mm\u003c\/div\u003e\u003cdiv\u003e* Weight: 140g\u003cspan style=\"white-space:pre\"\u003e\t\u003c\/span\u003e\n\u003c\/div\u003e\u003cdiv\u003e* Display: 2.8-Inch Color LCD with ST7789 Driver\u003c\/div\u003e\u003cdiv\u003e* Speaker: Enclosed Speaker, 4Ω\/2W\u003c\/div\u003e\u003cdiv\u003e* Battery: Lithium-Ion Battery, 4.2V\/2500mAh\u003c\/div\u003e\u003cdiv\u003e* Charging Input: DC 5V\u003c\/div\u003e\u003cdiv\u003e* Charging Port: USB Type-C\u003c\/div\u003e\u003cdiv\u003e* Antenna Connector: SMA-K\u003c\/div\u003e\u003cdiv\u003e* Headphone Jack: 3.5mm Stereo\u003c\/div\u003e\u003cdiv\u003e* Charging Indicator: Charging Status Indicator Light\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003eReception Performance Specifications:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cu\u003e1. Frequency Bands \u0026amp; Tuning:\u003c\/u\u003e\u003c\/div\u003e\u003cdiv\u003e* FM Band (Frequency Range): 65-108MHz (Please Refer to SYNC Usage Notes)\u003c\/div\u003e\u003cdiv\u003e* FM Tuning Steps: 0.01MHz\/0.1MHz\/1MHz\/10MHz\u003c\/div\u003e\u003cdiv\u003e* FM Selectable Bandwidth: 16 Levels — 56kHz\/64kHz\/72kHz\/84kHz\/97kHz\/114kHz\/133kHz\/151kHz\/168kHz\/184kHz\/200kHz\/217kHz\/236kHz\/254kHz\/287kHz\/311kHz\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e* LW Band (Frequency Range): 144-519kHz\u003c\/div\u003e\u003cdiv\u003e* LW Tuning Steps: 1kHz\/10kHz\/100kHz\u003c\/div\u003e\u003cdiv\u003e* LW Selectable Bandwidth: 3kHz\/4kHz\/6kHz\/8kHz\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e* MW Band (Frequency Range): 522-1620kHz\u003c\/div\u003e\u003cdiv\u003e* MW Tuning Steps: 1kHz\/10kHz\/100kHz\u003c\/div\u003e\u003cdiv\u003e* MW Selectable Bandwidth: 3kHz\/4kHz\/6kHz\/8kHz\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e* SW Band (Frequency Range): 1700-27000kHz\u003c\/div\u003e\u003cdiv\u003e* SW Tuning Steps: 1kHz\/10kHz\/100kHz\u003c\/div\u003e\u003cdiv\u003e* SW Selectable Bandwidth: 3kHz\/4kHz\/6kHz\/8kHz\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e* SSB Frequency Range: 1.8-30.0MHz\u003c\/div\u003e\u003cdiv\u003e* SSB Tuning Steps: 1kHz (BFO Fine Adjustment: 10Hz Resolution)\u003c\/div\u003e\u003cdiv\u003e* SSB Selectable Bandwidth: 6 Levels (0.5-4.0kHz)\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cu\u003e2. SSB Reception Specifications:\u003c\/u\u003e\u003c\/div\u003e\u003cdiv\u003e* SSB Frequency Coverage: 1.8-30.0MHz\u003c\/div\u003e\u003cdiv\u003e* Tuning Step: 1kHz\u003c\/div\u003e\u003cdiv\u003e* Side-band Modes: USB\/LSB; Press and Hold the Encoder Button for 2 Seconds to Switch\u003c\/div\u003e\u003cdiv\u003e* Side-band Status Display: Current Side-band Mode Displayed in the Upper-Left Corner of the Screen\u003c\/div\u003e\u003cdiv\u003e* BFO Fine Adjustment Range: ±14kHz, with 10Hz Resolution; 0-100Hz Range Provides Fine Adjustment\u003c\/div\u003e\u003cdiv\u003e* BFO Display: +NNNHz\/-NNNHz Displayed at the Top Center of the Screen; Settings Automatically Saved When Powered Off\u003c\/div\u003e\u003cdiv\u003e* BFO Adjustment Method: In SSB Mode, the Potentiometer Function Switches from Squelch Adjustment to BFO Fine Adjustment\u003c\/div\u003e\u003cdiv\u003e* Synchronous Detection (SYNC): Press and Hold the BW Button for 1 Second to Enable or Disable; When Enabled, the Chip's DSP Automatically Tracks the Carrier Using AFC, and SYNC Is Displayed on the Screen\u003c\/div\u003e\u003cdiv\u003e* Selectable Bandwidth: 6 Levels, 0.5-4.0kHz; Short Press the BW Button to Enter the Bandwidth Selection Interface\u003c\/div\u003e\u003cdiv\u003e* Frequency Offset: ±10.0kHz, with 0.1kHz Steps (Item 10 in AM Settings); Actual Reception Frequency = Displayed Frequency − Offset Value; Effective in SSB Mode Only\u003c\/div\u003e\u003cdiv\u003e* SSB AVC: Default Value: 48; Adjustment Range: 12-90; Step: 2; Changes Take Effect Immediately When Rotated (Item 8 in Audio Settings)\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003eSYNC Usage Notes:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* When SYNC is enabled, the chip automatically forces the AVC divider to a predefined value, resulting in slightly lower perceived audio volume compared to manual BFO mode. This is normal chip behavior, not a malfunction. The volume can be compensated for by increasing the SSB AVC value under Audio Settings → SSB AVC. Since SSB signals do not have a stable carrier reference, SYNC is better suited for signal positioning. For actual listening, it is recommended to disable SYNC and use manual BFO adjustment.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003eAudio Specifications:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* Speaker: Enclosed Speaker, 4Ω\/2W\u003c\/div\u003e\u003cdiv\u003e* Headphone Output: 3.5mm Stereo; Speaker Automatically Mutes When Headphones Are Connected\u003c\/div\u003e\u003cdiv\u003e* Volume Control: Potentiometer Adjustment; Shares the Same Knob as the Power Switch\u003c\/div\u003e\u003cdiv\u003e* Squelch Adjustment: Rotary Knob for Adjusting the SQ Threshold; In SSB Mode, the Knob Switches to BFO Fine Adjustment\u003c\/div\u003e\u003cdiv\u003e* SSB AVC: Adjustment Range: 12-90; Step: 2; Default Value: 48\u003c\/div\u003e\u003cdiv\u003e* Audio Output Power: To Be Confirmed (The Source Documentation Only Specifies a Rated Speaker Power of 2W)\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003ePower Supply \u0026amp; Charging:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* Battery Type: Lithium-Ion Battery\u003c\/div\u003e\u003cdiv\u003e* Battery Specifications: 4.2V\/2500mAh\u003c\/div\u003e\u003cdiv\u003e* Charging Port: USB Type-C\u003c\/div\u003e\u003cdiv\u003e* Charging Input: DC 5V\u003c\/div\u003e\u003cdiv\u003e* Charging Method: USB Power Adapter or Computer USB Port\u003c\/div\u003e\u003cdiv\u003e* Charging Indicator: Charging Status Indicator Light\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003eDisplay \u0026amp; User Interface:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* Display: 2.8-Inch Color LCD (ST7789)\u003c\/div\u003e\u003cdiv\u003e* Backlight Brightness: Adjustable\u003c\/div\u003e\u003cdiv\u003e* Screen Saver Timeout: Adjustable\u003c\/div\u003e\u003cdiv\u003e* UI Themes: Multiple User Interface Themes and Color Schemes Available\u003c\/div\u003e\u003cdiv\u003e* Dynamic Information Display: Displays Station Name, Program Name, Real-Time Bandwidth, Frequency, Signal Status, and Other Information\u003c\/div\u003e\u003cdiv\u003e* Languages: Chinese, Norwegian, Spanish, Portuguese, English, Dutch, Polish, Croatian, Italian, and More; Default Language: English\u003c\/div\u003e\u003cdiv\u003e* Operation Methods: Physical Buttons, Rotary Encoder, and Touchscreen (The Bandwidth Selection Interface Supports Selection via Rotary Encoder or Touchscreen)\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003eInterface Definitions:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* Antenna Input: SMA-K Connector for External Antenna Signal Input\u003c\/div\u003e\u003cdiv\u003e* Headphone Jack: 3.5mm Stereo Audio Output; Built-In Speaker Is Automatically Muted When Headphones Are Connected\u003c\/div\u003e\u003cdiv\u003e* Charging Port: USB Type-C, DC 5V Input\u003c\/div\u003e\u003cdiv\u003e* Speaker: Built-In Enclosed Speaker for Playback of the Currently Selected Radio Station\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003ePacking List:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* 1 x HamGeek Radio Main Unit\u003c\/div\u003e\u003cdiv\u003e* 1 x Telescopic Antenna\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cb\u003ePackaging Details:\u003c\/b\u003e\u003c\/div\u003e\u003cdiv\u003e* Package weight: 0.4kg\u003c\/div\u003e","brand":"HAMGEEK Official Store","offers":[{"title":"Default Title","offer_id":51124918648997,"sku":"106332","price":76.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/9318\/7237\/files\/20261107172647_a51a9e8f.jpg?v=1794212799","url":"https:\/\/www.hgeek.com\/es\/products\/hamgeek-tef6686-ultra-portable-radio-fm-lw-mw-sw-ssb-usb-lsb-receiver-2-8-inch-c","provider":"HAMGEEK Official Store","version":"1.0","type":"link"}