Typically, the most common reason that causes LED shop lights to interfere with a radio is their power supply, also known as an LED driver. The LED driver provides the LED arrays with a series of controlled bursts of power, which is referred to as Pulse Width Modulation or PWM, in cycles. This determines how many times the LED arrays will flicker per second. During this period, the Hz ratio is converted into an electric signal and received by radio devices, which is what causes unwanted sounds or disturbance you'll hear. To alleviate and fix this issue, the driver needs to be replaced in one or more of your LED shop lights because it no longer has the ability to control the Pulse Width Modulation or PWM signals like it should.