A non air flow thought I had: I wonder if adding external finned heat sinks under the two bolts holding the PA transistors to the existing heat sink would have any appreciable effect. The other thought I've had is putting some heat sink compound, like Arctic Silver 5, between those transistors and the panel they mount to, in order to improve heat conduction (though it seems Elecraft would have included this in be build if beneficial).

73, Phil w7ox
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