[R-390] Tube Cooling

[Bob Young]

This is also pretty good, shows the amount of temperature decrease with IERC shields as compared to bare bulbs.

http://www.qsl.net/kh6grt/page4/shields/shields.htm

Bob Young
KB1OKL

> Date: Fri, 19 Apr 2013 19:21:31 -0400
> From: ka1kaq at gmail.com
> To: kirklandb at sympatico.ca
> CC: r-390 at mailman.qth.net
> Subject: Re: [R-390] Tube Cooling
> 
> 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
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