It's not just a byproduct. There's a definite mode it switches into, that can be disabled, that draws additional power in order to heat the dish up. There is no

It's not just a byproduct. There's a definite mode it switches into, that can be disabled, that draws additional power in order to heat the dish up. There is no heating element, but the community understanding is that the radio elements are themselves used to do the heating.