>>Anyone know what RCAMSL and RCAGL translate to? The latter appears to be some sort of height measurement.<< RCAMSL = Radiation center above mean sea level RCAGL = Radiation center above ground level Sid Schweiger MIS Manager, Entercom Boston LLC WAAF - WEEI - WQSX - WRKO - WVEI Phone: 617-779-5369 Fax: 617-779-5379 E-Mail: sid@wrko.com