Here is the list of NIS (News and Information Service) affiliates from the 1977 Broadcasting Yearbook. NIS was an all-news network set up by NBC that offered live news around the clock. Dual anchors were heard weekdays, solo anchors nights and weekends. NIS had an hourly wheel with nothing broadcast between :00 to :07 so stations could insert their own local news. That's the same time NBC sent its regular affiliates the top of the hour NBC News. Top stories aired at :07 and :37, with segments on sports, entertainment and other features at other times around the hour.
Some stations that wanted to continue running network news at the top of the hour, either NBC or another network, would use the segment from :07 to :15 for its local news insert. NIS was live 24/7 except for a few hours Sunday mornings when the regular NBC network sent its affiliates special programs.
................
Arkansas....KMYO Little Rock
California....KGUY Palm Springs
...KFBK Sacramento
...KNAI-FM San Francisco (NBC-owned - now KMVQ)
...KAAP Ventura
Colorado....KRDO Colorado Springs
Connecticut.....WPOP Hartford (stayed all-news after NIS shutdown)
Delaware.....WILM Wilmington (stayed all-news after NIS shutdown)
District of Columbia.....WRC Washington (NBC-owned...stayed all-news after NIS shutdown)
Florida....WINZ Miami (stayed all-news after NIS shutdown)
...WQSA Sarasota
...WPOM West Palm Beach
Hawaii.....KHVH Honolulu
Idaho.....KSPD Boise
Illinois....WNIS-FM Chicago (NBC-owned - now WKQX)
Indiana.....WNTS Indianapolis
Kansas.....KWBB Wichita
Kentucky....WNNS-FM Louisville (WHAS's FM station - now WAMZ)
Louisiana.....KJOE Shreveport
Maine.....WLBZ Bangor
...WCSH Portland (stayed all-news after NIS shutdown)
Maryland.....WBAL-FM Baltimore (WBAL was a long-time NBC affiliate - now WIYY)
Massachusetts.....WNWS Springfield
Michigan....WCAR Detroit
...WMAX Grand Rapids
Minnesota....WWTC Minneapolis
Mississippi....WRBC Jackson
Missouri....KUDL Kansas City
Nebraska....KLNG Omaha
Nevada....KMBI Las Vegas
...KOH Reno
New Jersey....WBUD Trenton
New Mexico....KNWZ Albuquerque
New York....WABY Albany
...WHPN Poughkeepsie
...WNWZ Rochester
...WNWS-FM New York (NBC-owned - now WQHT)
North Carolina....WSOC Charlotte (stayed all-news after NIS shutdown)
...WURL Winston-Salem
Ohio.....WSTV Steubenville
Oregon....KJSN Klamath Falls
...KROW Salem
...KASH Eugene
Pennsylvania....KQV Pittsburgh (stayed all-news after NIS shutdown)
...WBRE-AM-FM Wilkes-Barre (stayed all-news after NIS shutdown - now WKRZ)
Rhode Island....WEAN Providence
Tennessee....WBIR Knoxville
Texas....WRR Dallas (stayed all-news after NIS shutdown - now KTCK)
...KURV Edinburg
...KTSM El Paso
...KRSV Fort Worth (yes, two affiliates in the DFW market)
Utah....KWMS Salt Lake City
Virginia....WRNL Richmond
Washington....KSPO Spokane
Wisconsin....WRIT Milwaukee
Wyoming....KRNK Cheyanne
Some stations that wanted to continue running network news at the top of the hour, either NBC or another network, would use the segment from :07 to :15 for its local news insert. NIS was live 24/7 except for a few hours Sunday mornings when the regular NBC network sent its affiliates special programs.
................
Arkansas....KMYO Little Rock
California....KGUY Palm Springs
...KFBK Sacramento
...KNAI-FM San Francisco (NBC-owned - now KMVQ)
...KAAP Ventura
Colorado....KRDO Colorado Springs
Connecticut.....WPOP Hartford (stayed all-news after NIS shutdown)
Delaware.....WILM Wilmington (stayed all-news after NIS shutdown)
District of Columbia.....WRC Washington (NBC-owned...stayed all-news after NIS shutdown)
Florida....WINZ Miami (stayed all-news after NIS shutdown)
...WQSA Sarasota
...WPOM West Palm Beach
Hawaii.....KHVH Honolulu
Idaho.....KSPD Boise
Illinois....WNIS-FM Chicago (NBC-owned - now WKQX)
Indiana.....WNTS Indianapolis
Kansas.....KWBB Wichita
Kentucky....WNNS-FM Louisville (WHAS's FM station - now WAMZ)
Louisiana.....KJOE Shreveport
Maine.....WLBZ Bangor
...WCSH Portland (stayed all-news after NIS shutdown)
Maryland.....WBAL-FM Baltimore (WBAL was a long-time NBC affiliate - now WIYY)
Massachusetts.....WNWS Springfield
Michigan....WCAR Detroit
...WMAX Grand Rapids
Minnesota....WWTC Minneapolis
Mississippi....WRBC Jackson
Missouri....KUDL Kansas City
Nebraska....KLNG Omaha
Nevada....KMBI Las Vegas
...KOH Reno
New Jersey....WBUD Trenton
New Mexico....KNWZ Albuquerque
New York....WABY Albany
...WHPN Poughkeepsie
...WNWZ Rochester
...WNWS-FM New York (NBC-owned - now WQHT)
North Carolina....WSOC Charlotte (stayed all-news after NIS shutdown)
...WURL Winston-Salem
Ohio.....WSTV Steubenville
Oregon....KJSN Klamath Falls
...KROW Salem
...KASH Eugene
Pennsylvania....KQV Pittsburgh (stayed all-news after NIS shutdown)
...WBRE-AM-FM Wilkes-Barre (stayed all-news after NIS shutdown - now WKRZ)
Rhode Island....WEAN Providence
Tennessee....WBIR Knoxville
Texas....WRR Dallas (stayed all-news after NIS shutdown - now KTCK)
...KURV Edinburg
...KTSM El Paso
...KRSV Fort Worth (yes, two affiliates in the DFW market)
Utah....KWMS Salt Lake City
Virginia....WRNL Richmond
Washington....KSPO Spokane
Wisconsin....WRIT Milwaukee
Wyoming....KRNK Cheyanne