Instead of a heatsink on something that does not generate any
heat ( if it does, then you are in serious trouble ) encase the
crystal in a block of insulation such as polystyrene. Difficult to
do with the crystal supplied but can be done.
On 27/10/2019 18:24, Bill Allen wrote:
For the last few days, I have been enjoying the WSPR feature of my QCX 20 meters. I have been spotted all over the country and even Hawaii and Africa. Good times! There are two issues that I don't know what to think about: