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AMNVOLT SI4732 TEF6686 Dual-system Full-Band Radio FM AM SSB Air Band Receiver + TEF6686 FM Receiver 2-in-1 Handheld Rad
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AMNVOLT SI4732 TEF6686 Dual-system Full-Band Radio FM AM SSB Air Band Receiver + TEF6686 FM Receiver 2-in-1 Handheld Rad

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USD 149.99
USD 106.99
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Product Details

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-32UBluetooth: JL high-performance chipScreen: 2.4-inch IPS touchscreen (320x240)Speaker: 40mm full-range speakerAntenna: Built-in 820mm telescopic antennaExternal antenna port: 3.5mm external antenna portBattery: 3.7V / 2500mAh lithium polymer batteryInterface: Type-C (5V/2A charging, supports data upgrades)Casing Material: Aluminum AlloyDimensions: 120 × 63 × 25mm (excluding antenna)Weight: Approximately 350gFeatures: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/

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