Channel 78
Channel 78 was removed from television use in 1983, but was formerly used by television stations in North America which broadcast on UHF frequencies 854-860 MHz.
There was one full-power originating station on this frequency in Canada. CBEFT (Radio-Canada Windsor) first aired on Channel 78 in 1976, moving to channel 54 in 1982. By 1996, the station had become a simple rebroadcaster of CBOFT Ottawa-Hull. Later a CBLFT rebroadcaster, it had been moved to channel 35 due to the reassignment of UHF TV channels 52-69 to mobile telephony in 2009; it remained full-power analogue until closing down (along with all of CBC/Radio Canada's rebroadcasters) in 2012.
In the United States, channels 70-83 had served primarily as a "translator band" containing repeater transmitters to fill gaps in coverage for existing stations. These transmitters were forced to change frequency repeatedly, as stations which had moved from 70-83 due to the 1983 introduction of analogue mobile telephony typically had to move again by 2011 due to the loss of UHF TV channels 52-69 to cellular telephones. While as low-power television stations these were not required to convert to digital operation on the 2009 US transition date, most were adversely affected by the upstream full-power stations conversion. Many have gone silent.
- WTTW (PBS Chicago) operated a channel 78 repeater from 1964–1972, now defunct.[1] Coverage is now provided directly by the main transmitters for the two Chicago PBS member stations (channels 11 and 20), housed at the Sears Tower upon its completion in 1973.
- KATU-TV (ABC Portland, Oregon) rebroadcaster K78AU Maupin, Oregon moved to K54BK channel 54[2] and will relocate to digital channel 17.[3]
- KCBD (NBC Lubbock) rebroadcaster K78AZ Matador, Texas had moved to K40FK channel 40. It is no longer in operation.
- KECI-TV (NBC Missoula) rebroadcaster K78CG Salmon, Idaho moved to K65BG channel 65; it is now digital channel 42[4] as K42JX-D.[5]
- KHQ-TV (NBC Spokane) rebroadcaster K78AI Libby, Montana moved to K66DR channel 66 and will move to digital channel 26.[6]
- KIIN-TV (PBS Johnston, Iowa) rebroadcaster K78CR Keosauqua, Iowa moved to K54AF channel 54; it is currently digital channel 24.[7]
- KIRO-TV (CBS Seattle) rebroadcaster K78BM Point Pulley, Washington moved to K67GJ channel 67; it is now digital channel 18.[8]
- KOAT-TV (ABC Albuquerque) rebroadcaster K78AS Santa Rosa, New Mexico moved to K64DV channel 64; it is no longer in operation.
- KOCO-TV (ABC Oklahoma City) rebroadcaster K78BK Seiling, Oklahoma had moved to K55EZ channel 55. Rebroadcasters for this region have been moved to digital channels K19GZ-D, K41KS-D, K43KU-D, K47LB-D and K49DO-D, all operated by KFOR-TV.[9]
- KSL-TV (NBC Salt Lake City) rebroadcasters K78AF La Barge, Wyoming and K78BF Preston, Idaho have been moved to K02GE channel 2 and K33GF channel 33 (now K33GF-D).
- KTVK (Phoenix) rebroadcaster K78AC Kingman, Arizona moved to K23FV channel 23 (now K23FV-D).
- KTVX-TV (ABC Salt Lake City) rebroadcaster K78AA Castle Dale, Utah moved to K32FR channel 32, now digital channel 38.
- KUTV (CBS Salt Lake City) rebroadcaster K78BG Myton, Utah has moved to K41GT channel 41 (now defunct).