Hi Marty, Noted that you have not commented on my cautionary note advising against driving the IC-4KL with the Orion. I hope my news was not too great a shock to your system. I simply cannot comprehend the mentality of a radio manufacturer who can omit so essential a function as an ALC input from its flagship HF transceiver. Cheers for now, 73, Adam VA7OJ/AB4OJ