David, Not all radiation behaves as waves. In fact, beta radiation is just a bunch of electrons being released.
Gravitons can behave as particles.
Even if they do have some wave properties, we can only examine them after we learn to detect them. Gravitons would be based on gravitational force. They would have no effect of electrical detectors. Once we figure out how to detect them, we will know that they are there anyway. It would make several properties of gravity easier to explain.