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Re: FYI: QDX small drift eliminated #qdx #wspr #tcxo


 

On Mon, Nov 21, 2022 at 12:18 PM, Neil Cherry wrote:
I appear to be missing something, you only applied the tape and no heat sink or did you
skip that part?
It sounds like the thermal pads are acting as a heatsink of sorts.? They *are* thermally conductive, after all, and a 1" square pad is *much* larger than the TCXO.?

The next question is why does this help?? Perhaps the heat path to the TCXO is via the board, and reducing the thermal resistance to ambient (by attaching the pad) reduces the TCXO temperature variation (just a guess.)
?
--
Paul Elliott - WB6CXC

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