HelloRadio manufactures advanced radio control transmitters and receivers featuring EdgeTX support, ExpressLRS technology, and precision control for drones and fixed-wing aircraft.
Zdravo Radio is a manufacturer of high-performance radio control (RC) systems, specializing in transmitters and receivers for the hobbyist and professional drone markets. Produced by ShenZhen HelloRadioSky Technology Co., Ltd, the brand is known for its V-series transmitters (such as the V14 and V16), which integrate modern features like Hall sensor gimbals, AI voice assistants, and full touchscreen interfaces.
Designed for versatility, HelloRadio products support open-source firmware including EdgeTX and OpenTX, as well as leading transmission protocols like ExpressLRS (ELRS) and 4-in-1 multi-protocol modules. This ensures broad compatibility with a wide range of unmanned aerial vehicles (UAVs), FPV racing drones, airplanes, and helicopters. HelloRadio focuses on delivering reliable long-range control telemetry and customizable user experiences for RC pilots.
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No. The built-in charging circuit is designed strictly for 2x 3.7V Li-ion 18650 unprotected cells or 2x 3.7V Li-poly cells (2S 7.4V pack). Charging incorrect battery types like 6.6V LiFE or 3.6V nominal Li-ion cells may cause fire or damage to the radio.
When operating the transmitter, maintain a separation distance of at least 20 cm between your body (excluding hands and feet) and the antenna to meet RF exposure safety requirements.
The units ship with stable EdgeTX software. Firmware updates should only be performed by experienced users via the USB-C connection or SD card. Incorrect updates can render the radio inoperable. Official firmware can be found on the HelloRadio webmjesto.
Do not attempt to charge or power on the radio if it has become wet or damaged. Disconnect the battery immediately and contact the retailer or support for guidance.