considering how important temperature is to the frequency accuracy I would
only consider fan cooling. For less than $ 10 you can have a system that
will hold the temperature at 43 C. The fan is very quit. To get best
performance I would cover all sides except the bottom plate with foam. I
I added a heat sink to the FE5680.
Curious what temperatures have been measured after an hour warm up.
Before heat sink 120 F top and bottom.
With heat sink on the bottom quite a large one.
Top of case free air 105 F
Bottom 105 F
Internal, (screw out of the end and touching the internal heat
