LED bulbs with a "CE" mark do not generate Radio
"CE" means "Conformite Europeenne" in French, or conformity with the European Standard (for LED lighting
in this case).
That standard puts a limit on the amount of Electromagnetic Interference of the LED. Extra components are put into the bulb circuitry to do this, at extra cost.
I have used LED's that have the CE mark, and ones that don't. The former don't interfere with Radio reception
, and the latter often (not always) do. I have bought chinese manufactured LEDs that carry the CE mark, and they perform well.
I am not aware of whether or not there is a similar US standard to the CE mark for LED bulbs, or whether LED's sold
in the US have the mark. IF the do, then you wont have the problem.
Hope that helps.