[Elecraft] Heatsink for KX3

[Don Wilhelm]

George,

Your understanding is correct.  Elecraft recently improved the heatsink 
with additional area.  The new heatsink is an "L" shaped metal that 
wraps around the bottom on the KX3 as well as covering the rear area.

The stock heatsink is quite adequate for CW and SSB modes, and you 
should be able to run at full power.

If you are doing digital modes with long transmit times *and* you want 
to operate at power levels above 3 (maybe 5) watts, then you may want to 
consider one of the 'aftermarket' heatsinks.

The KX3 will reduce power to protect itself if the PA transistors get 
too hot.

So you will find your answer by considering what modes you wish to 
operate, the transmission times involved, and of course will you be 
operating portable when the ambient temperature is HOT and the sun is 
shining directly onto the KX3.  Those are abnormal conditions, but if 
you expect to encounter those extremes, one of the aftermarket heatsinks 
may be a good idea - for normal operation the stock heatsink will do 
quite well.

73,
Don W3FPR

On 3/19/2016 9:37 AM, george allen wrote:
> It is my understanding that an additional heatsink for the KX3 is not required. Is this correct?  I searched the list atchives and coulld not find clear info on this.
>
> I am sure that this has been covered before, please forgive me.....I just didnt find my answer.
>
>