I am studying to get my ham license (going to take the tech and general at the same session). As I like to be prepared for any emergency (solar flares, EMP etc.) I would like to purchase a used tube transceiver that would likely survive one of these disasters. I have been looking at both the Yaesu and Kenwood brands since they are well known and I have had both brands in general coverage receivers. I'm having a hard time finding info on which models are tube only and not hybrids. Can anyone offers some guidance to help me make the right choice?