http://elecraft.85.s1.nabble.com/K2-Heat-On-Digital-Modes-tp5572168p5595323.html
the fan over the PA transistor area of the heat sink. The fan should
> Don,
>
> Thanks for the response and info.
>
> The wording in the Operating Manual made me think that the same values are used
> for RTTY as for SSB, my mistake. I used Spectogram (surprisingly easy) and have
> everything working nicely now.
>
> On the digital transmission heat issue. The rig is ok on 1-2 minute digital
> transmissions (e.g., 1-2 minutes of PSK at 30 watts). It'll warm up a bit,
> although nothing uncomfortable, and the internal fan can handle it. The problem
> is longer transmissions. For example, I do a lot of file sending for EmComm
> simulations and those transmissions can run 5-10 minutes at a time. The area
> above the power transistors gets very uncomfortable on a long transmission like
> that and people notice drift in my transmissions.
>
> For now I've got a desk fan pointed at the rig when doing longer transmissions
> and that's keeping the rig cool and stable. I'll find myself a muffin fan or
> smaller desk fan at the next hamfest.
>
> Jon
> KB1QBZ
>
>
>
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