>>When did the call-sign rules change, allowing more liberal "sharing" of a call sign over AM, FM and TV?<< I believe it was in 1983. Sid Schweiger IT Manager, Entercom New England WAAF - WEEI AM/FM - WKAF WMKK - WRKO - WVEI AM/FM 20 Guest St / 3d Floor Boston MA 02135-2040 Phone: 617-779-5369 Fax: 617-779-5379 E-Mail: sid@wrko.com