[R-390] Tube Cooling

[Todd, KA1KAQ]

On Fri, Apr 19, 2013 at 2:11 PM, <kirklandb at sympatico.ca> wrote:

> Seems to me Tisha did some of these experiments awhile back.
>
>
And somewhere in the archives should be the report posted by the late Bill
Kleronomos/KD0HG with the actual temps from the different types of shields.
This is the report that shows the bulb temperature is actually reduced by
the IERC type shields over an open glass envelope. It made a believer out
of me.

de Todd/'Boomer'  KA1KAQ/4