[Boatanchors] Tube shields CORRECTION

[rbethman]

One reason for *some* shields, such as the *IERC* types, is that the are 
lined with a pleated liner that conducts heat to the same type metal 
outer piece.

The whole intention is to wick heat away from the tube at a faster rate 
than simple convection.

These also have a base that is also designed to work as a complete unit.

The tubes with these run significantly cooler that the shiny nickel or 
chrome plated ones.

Bob - N0DGN

On 5/25/2014 6:48 PM, Bob Jackson wrote:
> I always assumed that tube shields were used to keep stray RF either in or out of the tube or both. Are there other reasons as well like keeping them securely in their sockets via the little springs inside the shield?
>
> Bob