I have noticed that the FAN in the KPA100 will run on HIGH continiously once it has begun. It will start out on LOW but, once you TX a few times, it switches to HIGH and just runs and runs and runs. I've not TX'd in about an hour and the fan has yet to switch back to LOW or OFF. Just wondering if this is typical behavior with the current firmware? 73 de John - KC4KGU K2/100 #2490