I run net control on our local 2m nets and enjoy using my KX3… with earphones it provides a “big rig” feel while operating.
Alas, on transmit the 2-meter transverter generates a LOT of heat, very quickly, even at quite modest power levels (e.g. 0.5 watts). Trying to attenuate some of that heat, I bought Fred Meier’s, VE7FMN, Cooler KX Plus heatsink. Fred’s aftermarket design is very well-done and he inlcudes very nice stainless steel fasteners.
I have an early-2017-build KX3 (serial number 9428; factory assembled) which includes the upgraded factory heatsink. Apparently, this heatsink is bonded to the case with an adhesive in addition to the four fasteners.
Normally one would apply heat to soften such an adhesive. Albeit, great care is needed to ensure internal components are not damaged.
Reasoning that the KX3 folds back power at ~60C, I set that as my upper limit. Using a portable dryer and a Fluke IR temperature meter I brought the stock heatsink to just under 60C/140F. Still no-go. The stock heatsink will not budge.
I expect I could pry the stock heatsink off using a flat-bladed screwdriver, if I were willing to mar the case of my KX3. But not damaging the radio remains the overarching priority.
Any suggestions?
73, Jeff K4YWZ
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