[Elecraft] Minimum clearance on KPA-100 heatsink?

[W3FPR - Don Wilhelm]

Tom,

Personally, I would not stack them - you can try it of course and monitor 
the temperature of the lower one carefully.  Send us a report if you try it.

73,
Don W3FPR

----- Original Message ----- 

If I stack two K2/100's on top of each other using only the rubber feet for 
clearance would the lower K2 be at risk of overheating under contest level 
activity?