That radio interference might be coming from your cheap USB charger - Appareo

Cheap chargers may carry FCC/CE marks, look safe and legit, but ultimately they can damage your ability to receive and transmit radio communications. This could be as benign as negatively impacting your ability to receive an AM radio station, or as painful and inconvenient as knocking out two-way radio communication completely -- especially if that is your aircraft VHF comm.

Portable avionics have become an essential part of aviation. Keeping these devices charged has never been more important.

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CableCreation USB C to 3.5mm Headphone Adapter, Cable Creation 2-in-1 USB C Type-C to Hi-Res 3.5mm Audio with PD Charging Adapter, Fast Charge for Google Pixel 2/3, Galaxy Note 9/S8/S9/S10, Gray

That radio interference might be coming from your cheap USB charger - Appareo

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AUC010BTBK by Belkin (Factory New) Great sound at home or on the road. SoundForm Motion brings amazingly full-range audio and all-day comfort in its sealed in-ear fit. You'll enjoy up to 9 hours of non-stop playtime from the earbuds, plus another 24 hours of playtime in the charging case. An IPX5 rating means they're sweat and splash resistant.

Belkin SOUNDFORM Motion True Wireless Earbuds