[R-390] R-390 Questions - Comments

[Roy Morgan]

At 01:57 PM 3/1/2006, Dan Merz wrote:
>Mike,  I put a small fan on the left side of mine near the regulator tubes,
>to get rid of some of the heat,  mounted on a plate externally so easily
>removed and with no permanent mod to receiver.  This was ala design of Roy
>Morgan.

R-390/URR folks,

That fan plate is shown at:
<http://home.comcast.net/~roysmorgan/ba/FanPlate.html>
One picture includes a ruler so you can make one yourself easily.

As my notes tell, the tubes melted speaker wire insulation with no fan, but 
I could put my fingers on the tubes with the fan.

I have yet to work on a fan inside the radio. I think there is room to put 
a possibly smaller fan fastened to the front frame near the B+ filter cap 
with no holed drilled. It would be powered from inside the radio and not 
need separate turn on/off.

Roy



- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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