For the intent the radio mustn't have good reception, the more interference the better, as long as it isn't just white noise, I don't actually want to be listening to whatever is said over radio waves.
You sound confused. More noise is more entropy. Less noise is less. You want as much noise as possible. You are trying to use "
radio noise", but for somehow want less noise?
White noise is used as the basis of some random number generators. For example, Random.org uses a system of atmospheric antennae to generate random digit patterns from white noise.