[Elecraft] XV50 Cooling

[Don Wilhelm]

Jerry,

There are holes in the top cover that are "supposed" to be positioned 
above the attenuator resistors, and the new transverters have holes on 
the bottom on either side of the power module.  I am looking at a rather 
new XV50 right now that has come in to me for repair.  The builder did 
not position the top cover holes over the attenuator resistors, but the 
holes are in the cover.
If you are driving the transverter from the low power outputs, the 
attenuator resistors are not used, so that source of heat is a no-op, 
but the resistors will heat up if higher power is used to drive the 
transverter.

I do not believe additional ventilation holes are needed in most cases.  
If air flow below the transverter is available (do not operate it 
without the feet), the cooling is adequate.  It seems to me that some 
operators get concerned with any heat generation, but in reality, if it 
is cool enough you can place your hand on it for more than 30 seconds, 
it is not hot enough for concern.

Earlier transverters did not have the holes in the bottom panel, and 
some very early ones did not have the vent holes in the top cover.  Yes, 
these may need additional vent holes, especially over the attenuator 
resistors.

73,
Don W3FPR

n0jrn wrote:
> OK gang:
>
> I've seen a number of posts in the archive about drilling holes in the 
> panels to cool a transverter.
>
> None of those posts are very specific about where your drilling the holes.
>
> Can some of you who have done this,  tell me where you did that ???
>
> OR    does Elecraft make panels available that are pre-drilled ?? 
> ( I don't see then in the products list )
>
> Just curious !
>
> 73             Jerry            N0JRN 
>
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