[R-390] Black Tube Shields, IERC and cooling fans

[Steve Toth]

Tish
I don't have enough IERC shields (yet) for my two R390A's, so I'm running selective tubes with IERC shields and the rest without any shields.  I've been contemplating installing a fan or two on the receivers to circulate the air.  What diameter fan(s) did you use and what was the placement?
 
I was considering 12volt fans with approximately the same blade diameter as the side panel hole - maybe one fan per side to pull air out of the chassis.  Bottom left side rear (AF deck) or upper left side front (IF deck) combined with a bottom right side front (Pwr Supply) or upper right side rear (RF deck).  I'm tending towards the IF deck and power supply placements.
 
Any input is appreciated.

 






-- Steve, K7PZN 
Woodinville, WA
If you can read this, thank a teacher; if you're reading this in English, thank a military veteran.


--- On Fri, 4/17/09, Tisha Hayes <tisha.hayes at gmail.com> wrote:

From: Tisha Hayes <tisha.hayes at gmail.com>
Subject: Re: [R-390] Black Tube Shields, IERC
To: r-390 at mailman.qth.net
Date: Friday, April 17, 2009, 10:09 AM

In every instance, the use of a small computer-fan to move air across the
chassis really helped out in lowering the temperature of the tubes and the
chassis. This does not need to be a gigantic fan.

-- 
Ms. Tisha Hayes

----------------
"I will not recant the truth. I am corn, not chaff; I will not be blown
away
with the wind or burst by the flail. I will survive both."
-Walter Milne, 1558
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