I sent you the e-mail sorry for the grammer cant type very well sometimes. I have worked for Time Warner,Comcast,Inter-Media,Charter and a few others all the information you have is correct if you stay above ch#118 on your modulation you will be ok try to keep your signal levels close to each other or you will find a harringbone effect on your channels in the 30-40 range.Dont forget to check in your cable box menu for the rf bypass that will allow the modulated channels to pass through the cable box. T.W.,Comcast,and Charter I know all use the same Digital boxes.The other scenario is with ant. you can usually modulate above ch # 45