AMNVOLT Tef6686 - SI4732 Shortwave Radio SSB Testing on Ham 20m 40m and 11m CB скачать в хорошем качестве

AMNVOLT Tef6686 - SI4732 Shortwave Radio SSB Testing on Ham 20m 40m and 11m CB

AMNVOLT ESP138 from Banggood. #shortwaveradio Finally a Tef 6686 radio that can receive SSB sideband. You get the best of both worlds here. Tef6686 and SI4732 chips within one radio. This is a test on SSB Single Side Band on 40m 20m and 11m Buy Here. https://ban.ggood.vip/1mepJ My Discount Code. BG52a66a Banggood 19th Anniversary Sale reduced items here https://ban.ggood.vip/1mgj4 #99BanggoodAnniv Description: The ESP138 is a dual-system radio, utilizing the TEF6686 system (open source project) and the ESP32-SI4732 system architecture. It integrates the TEF6686 chip with high-fidelity Bluetooth functionality, offering exceptional selectivity and ultra-high sensitivity. The SI4732 supports Air Band (AIR) and Single Sideband (SSB), as well as Bluetooth 5.0 dual-mode. Equipped with a 2.4-inch touchscreen, numeric keypad, large-capacity battery, and aluminum alloy body, it offers both professional reception and portability.  Specification: Controller: ESP32-WROOM-32U Bluetooth: JL high-performance chip Screen: 2.4-inch IPS touchscreen (320x240) Speaker: 40mm full-range speaker Antenna: Built-in 820mm telescopic antenna External antenna port: 3.5mm external antenna port Battery: 3.7V / 2500mAh lithium polymer battery Interface: Type-C (5V/2A charging, supports data upgrades) Casing Material: Aluminum Alloy Dimensions: 120 × 63 × 25mm (excluding antenna) Weight: Approximately 350g  Features: 1. [Dual-System Reception] The ESP138 is a dual-system professional radio, utilizing the TEF6686 system (open source DSP algorithm) and the ESP32-SI4732 system (full-band coverage), operating independently. While the radio is powered on, a single click of the power button allows you to switch between operating systems. Note: The TEF6686 system supports open-source firmware upgrades, while the SI4732 system's firmware is locked and cannot be flashed. 2. [TEF6686 System] The TEF6686 system supports FM/LW/MW/SW bands, DSP noise reduction algorithms (CEQ, EMS, iMS, and PACS), and full RDSs data display, specifically for high-fidelity broadcast reception. 3. [SI4732 System] The SI4732 system supports FM/LW/MW/SW bands, as well as the aviation band (AIR 118-138MHz) and single-sideband (SSB), meeting the needs of amateur radio enthusiasts. Supports ATT attenuation, AGC gain control, bandwidth (BANDW) step switching, and single-sideband fine tuning (BFO). 4. [Bluetooth Dual Mode Support]