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The Pan-American television frequencies are different for terrestrial and cable television systems. Terrestrial television channels are divided into two bands: the VHF band which comprises channels 2 through 13 and occupies frequencies between 54 and 216 MHz, and the UHF band, which comprises channels 14 through 36 and occupies frequencies between 470 and 608 MHz.
FM channel 200, 87.9 MHz, overlaps TV 6. This is used only by K200AA.; TV 6 analog audio can be heard on FM 87.75 on most broadcast radio receivers as well as on a European TV tuned to channel E4A or channel IC, but at lower volume than wideband FM broadcast stations, because of the lower deviation.
76–88 MHz TV channels 5–6 (VHF-Lo) 87.5–108 MHz: FM radio broadcasting (87.9–91.9 non-commercial, 92–108 commercial in the United States) (known as "Band II" internationally) 108–118 MHz: Air navigation beacons VOR; 118–137 MHz: Airband for air traffic control, AM. 121.5 MHz is an emergency frequency
Class R: VHF, 100 kW low-band (channels 2–6), 325 kW high-band. (channels 7-13) Class S: VHF, more than 100 kW low-band/325 kW high-band. Notes: Official definitions of these classes are difficult to locate. The values above are inferred from the Industry Canada database. There is some ambiguity about the difference between Classes C and D.
Also, some Japanese and Soviet receivers could tune further down the VHF low band, making it possible to receive audio from VHF channel 5 at 81.75 MHz using Japanese band receivers that tuned to 76 MHz, while Soviet OIRT band receivers included audio reception of VHF channels 4 (71.75 MHz) and 3 (65.75 MHz).
Until 1952, the FCC had allocated only 6 television channels to the Bay Area, but in 1954 KSAN [2] began transmitting on UHF channel 32 and KQED began educational programming on channel 9. By 1956, the Sacramento area had KCRA , KBET KOVR , and KCCC on the air, the San Jose area had KSBW and KNTV , and San Francisco had KRON , KPIX , KGO , KQED ...
Channel 5 5.1 (UHF 29) August 27, 1930 [3] On-Air 525 30 Mechanical Television: Now ATSC: W9XBK Became W9XCB, then WBKB, now WBBM-TV: Chicago, IL Balaban and Katz Corp. Channel 2 2.1 (VHF 12) 1940 Still on air 525 30 Mechanical television: Now ATSC: W9XCB WBBM-TV: Chicago, IL CBS Channel 4 2.1 (VHF 12) 1940 Still on air 525 30 Mechanical ...
Channel spacings vary from country to country, with spacings of 6, 7 and 8 MHz being common.. In the UK, Band I was originally used by the BBC for monochrome 405-line television; [4] likewise, the French former 455-line (1937-1939) then 441-line (1943-1956) transmitter on the Eiffel Tower in Paris, and some stations of the French monochrome 819-line system used Band I.