Put a thermometer in the middle of the heatsink on my rig. On long CW xmissions I see temps as high as 145 Degrees F. Shack temp is 85F. I have the fan set to run on high all the time. Is this normal. I laid another small fan on the heatsink and the temp stayed below 115F. Has anyone added more cooling to their K2? 73 George/W2BPI