Thanks, Hotat2 It does not surprise me that the FCC filings were inaccurate, I certainly have found that to be true in the case of D7S, where I did the same type of analysis that you did. The problems you found in the D11 data did not jump out at me as much as D7S, so I apparently did not go through the same process. Everything in the transponder charts, except where I made specific notes, was copied into Excel directly from the databases filed with the FCC applications, if at all possible, and cut and pasted from the PDF files in other cases. Everything with blue background comes directly from the FCC filings. Anything that I have manually corrected has a yellow background. I have friends and family visiting this weekend (since yesterday). I will review what you have found, but probably not until Monday evening. .