RadioReference.com Forums

Hi, although I live in ILL, but by using ADSB, I can see frequent tracks of KC-135s that seem to racetrack between Oshkosh on Fond du Lac. This is not what I think is a standard Air refuelling route nor is it in an MOA that I can detect. I have programmed all the frequencies I can find for Volk Field and any mention of air refueling normally used there. I can hear the KC-135s reporting into Chicago Center as they leave the area but I never can find their air to air frequencies. I assume they are refuelling F-16s out of Madison or elsewhere. Any ideas as to where I can find these frequencies?