people who seriously think stuff like that is real don’t subscribe to the same model of reality as we do, they just merrily invent models to describe things in whatever way enables their delusions.
they don’t think of radio as anything so fancy as waves or particles, it’s just a nebulous concept that works however they need it to for them to justify their insane beliefs.
pretty sure most trains are powered by either overhead wires or third rails? considering that urban rail systems are always electrified and those have A LOT of trains.