I used to have fans as one of my categories back when I was employed as
a components engineer at Hewlett Packard. One thing I remember is that
even a small amount of moving air makes a big difference in a heat
sink's thermal resistance. You don't need a huge fan.
Alan N1AL
On 07/23/2015 01:40 PM, KM4VX wrote:
I have found that the use of an inexpensive computer type fan on even low
power running behind the KX3 works well in allowing the full use of the
digital modes, to include WSPR at 5 watts full cycle of 112 seconds. Thank
you for all the thoughtful inputs. Running WSPR at 3 watts does not require
the fan, but at 5 watts the fan is adequate. The radio gets warms, but does
not overheat. My KX3 came with the latest heat sink from ElecraftI, have not
performed the temperature compensation mod, and will not be buying any
after-market heat sink. 73 Ron KM4VX
--
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