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==1970s==
===Table===
{| class="wikitable"
!Callsign
!Channel
!Market
!Network
!Owner
!Studio location
!Transmitter location
!NAB seal?
|-
|KHJ-TV
|9
|Los Angeles, CA
|Ind
|RKO General
|5515 Melrose Avenue, Hollywood
|Atop Mount Wilson
|{{No}}
|-
|KNBC-TV
|4
|Los Angeles, CA
|NBC
|O&O
|
|
|{{Yes}}
|-
|KTLA
|5
|Los Angeles, CA
|Ind
|Golden West Broadcasters
|
|
|
|-
|WXXI-TV
|21
|Rochester, NY
|PBS
|Rochester Area Educational Television Association, Inc.
|
|
|
|-
|
|
|
|
|
|
|
|
|}