Geoff Fox has been there for 25 years or close to it. (I definitely know he was there in 1985.) To me, channel 8 wouldn't be the same without Dr. Mel straining to say "HOT-FERD"! (LOL)
As for old age, how old was John Quill at WWLP-TV (NBC) channel 22 in Springfield, MA before he finally retired? (He has since passed away.)