[Elecraft] [KX3] KX3 and Digital Modea (KM4VX)

[Alan]

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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