57af1958_ugust_2011___Engineering_Radio__Solid_State
[Attribute] Ruggedness [Tube] Very rugged, able to take heat, EMP, lightning, mistuned antenna, poor operating environment, etc [Comment] Advantage: Tube [Solid State] 
Not heat tolerant, lightning and EMP can damage MOSFETS, switching power supplies sensitive to AC mains issues
August 2011 « Engineering Radio
Solid State