Taking the "heat" off printed circuits

[Rob]

Charlie,

That elevated tube socket adapter is a darned good idea. Some circuits where inter-element and lead capacitance changes would detune the circuit wouldn't like it but in an audio output stage, vertical oscillator and output, etc. this would work fine. You could also ad a polished aluminum disc heat deflector around the new socket to stop radiated IR from illuminating the circuit and components below the tube.

Rob