BEC stands for Battery Eliminator Circuit. It takes 7.2v-8.4v commonly used for electric RC and regulates it to 5.0v which allows the receiver to operate properly without the need for a separate battery pack.
After hard landings or crashes the receivers ceramic filter or tuning coil(s) can become vibration sensitive. Other sources of interference can be RF noise generated by bad bearings in the engine, electronic ignition systems, loose screws, or other metal to metal contact in your R/C application.
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Product Support & Service
Technical questions about this product should be directed to Horizon Hobby:
Horizon Hobby GmbH Hanskampring 9 D-22885 Barsbuettel Deutschland
US Product Support: Mo - Fr: 2:00pm - 9:00pm (UK Time zone hours of operation) English: +44 (0) 127 929 7061
Europe Customer Service & Tech Support: Mo - Fr: 8:00am - 4:00pm English: +44 (0) 127 929 7061 German: +49 (0) 40-822167800 French: +33 (0) 7 822 63 500