My old TV Guides give us some idea of the call-letter and logo switch from KOOL to KTSP.
This 1981 ad features the long-running KOOL News logo:
KOOL announced the callsign switch to KTSP with this ad that ran next to the listings for October 2, 1982:
But for some weeks afterward, news ads still featured a modified version of the old logo (minus, of course, the "KOOL News" branding):
By late November 1982, the new logo makes an apperance, but the station's news operation is branded "TV10 News" (and Mary Jo West is apparently gone from the station, since neither the ads for the 6 nor the 10 P.M. news mention her):
Finally, by January 1983, the "NewsCenter 10" branding, which would survive for the rest of the decade, is in place: