[R-390] Thermal Stability and Top and Bottom Covers?

[Bob Camp]

Hi

The 390 runs hotter than the 390A so it is a bit more “happy” with a bit of 
moving air. Spacing the radios about 3” apart in a normal open back rack
is fine for the 390A. Maybe a bit more space is better on a 390. It also depends 
a bit on how many you are stacking. If you have three 12’ racks full of radios all
next to each other,  that will require different cooling than two radios in an 
otherwise empty rack. 

Bob


> On Oct 16, 2016, at 12:11 PM, Jerry O. Stern <jsternmd at att.net> wrote:
> 
> I am rack mounting my R390A and R390 and have always read that covers should
> not be used in cabinets.  My cabinet has a wide open rear, dDo I need to
> install a fan for circulation?  Would a fan create too much thermal
> fluctuations to affect performance noticeably?
> 
> 
> 
> Jerry NY2KW
> 
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