I enjoy using the digital modes and have made many contacts using my KX3. Recently, I found on the internet some information about modifying the heatsink on the KX3 to allow more power…up to 8-10 watts. I found W5TOM’s page very helpful, and it appears that there are now other Hams that are creating their own mods for sale.
Here are some photos of my creation. I’d like to powder-coat the outside eventually. Remember that any areas that you want to transmit heat need to be bare.