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

[Richard W. Solomon]

The original owners ran these 24/7 in most cases. Why fix what ain't broke ??

73, Dick, W1KSZ

-----Original Message-----
>From: Steve Toth <stoth47 at yahoo.com>
>Sent: Apr 17, 2009 2:30 PM
>To: r-390 at mailman.qth.net
>Subject: Re: [R-390] Black Tube Shields, IERC and cooling fans
>
>
>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.
>
> 
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>-- 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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