Most in the real world when their radios went out had to RTB. Think about the good ol days, big tube radios exposed to vibration, Gs, shock. Get back to base and all it's need is a tube replaced.
A tube fer ya younguns is a giant glass transistor. When your TV went out dad hadda yank out the tubes from the TV, go to the hardware store, and stick em in a machine one by one till he found the bad one.
Fun!