[Elecraft] Recommended Power for K3/100 for 100% Data Modes

[Brian Hunt]

One thing you might check is whether or not your K3 has thermal pads between the LPA transistors and where they bolt to the bottom cover. I ran across this when doing some mods and the instructions said to reinstall them but my early 4xxx K3/100F didn't have them. When I asked the Elecraft tech he said they were added because of the higher duty cycle digital modes. As a minimum make sure those screws are tight. 

73, 
Brian, K0DTJ

> On May 22, 2020, at 16:03, Eric KG6MZS <k3 at hollywoodtitle.com> wrote:
> 
> Hello All,
> 
> I’ve searched the reflector's archives and haven’t found anything on this, so here goes.
> 
> I have an aging K3/1000 (sn 3045) and I wish to preserve its operating life.  Up until now I’ve mostly operated in SSB and BPSK.  Recently I’ve been exploring some 100% duty cycle modes and I am wondering what would be a prudent power level for these modes.  Or perhaps there is a temperature limit that should be observed on the KPA3’s heat sink?
> 
> Suggestions?
> 
> TIA,
> Eric Fitzgerald
> KG6MZS 
> 
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