[R-390] Fan Plate for R-390/URR (and R-391 and r-389)

[Charles Steinmetz]

Roy wrote:

> Ok here goes - I expect that this image will get out over the list since it is well under the size limit.
> I also send the notes file that explains about the thing.

Very cute, Roy.  Thanks for sharing!

I wonder if those chassis holes happen to be close to a common 
mini-muffin fan size?  If so, the efficiency might be improved by using 
three smaller fans with clear apertures (no blockage).  You could also 
run one blowing in and two blowing out (or vice-versa) to avoid blowing 
air heated by the 6082s through the rest of the radio, or cooling the 
6082s with warm air drawn past the rest of the circuitry.

(Not that I think it needs any improvement -- it looks like there should 
be plenty of air to keep things cool.)

Best regards,

Charles