NA Band I TV:
This is a listing of North American TV stations operating on what's known in Europe as "Band I" - 54-88MHz. Only stations in the U.S., Canada, and Mexico are listed; only stations east of 91W (roughly the Mississippi River); and only stations of 500 watts or more effective radiated power. Additional high-powered stations probably exist in Mexico but aren't listed because their power is unknown.
See also Todd Emslie's and Bill Hepburn's sites for more information on Band I stations in the Pacific and Caribbean.
The channel number, offset, visual, and aural carrier frequencies are given at the top of each listing. There are only three offsets assigned in North America: minus (-10KHz), zero, and plus. (+10KHz)
Within each channel/offset, the first column is the effective radiated power in kilowatts. Next are the transmitter coordinates. Then, the city and state/province the transmitter is authorized to serve. In many cases, the transmitter is actually located in a different city. (or even a different state) This is followed by the Maidenhead grid locator where the transmitter is located. (we usually don't use six-character locators in North America, sorry guys!)
After the locator are the government-assigned call letters of the transmitter. Canadian and Mexican stations may or may not occasionally broadcast these call letters. U.S. stations are required to do so once an hour. (violations are not unheard-of :( )
Finally, an indication of the programming carried by the transmitter. The mark {S} in this column indicates the station broadcasts in Spanish; {F} denotes a French-language station. Where a set of call letters appears here, the transmitter relays the station whose call letters are given.
Most stations listed are commercial outlets. PBS is a non-commercial cultural/educational channel; 3ABN is a religious network; and the VVN ("ValueVision") station in Atlanta is a shop-at-home station.
Most of the digital stations listed are permits only, and are not yet on the air. However, there is significant evidence that the digital stations on channel 2 in Cleveland, Ohio and channel 3 in Chicago, Illinois are operating. (noise, consistent with reception of a digital signal on an analog TV, has been seen on channel 2 in Louisiana during skip openings towards Toronto and Detroit.)