ATSC is a broadcast standard ~1997
NTSC is a broadcast standard pre-dating WWII
Right now broadcasters are pumping money into two transmitters -- their old NTSC AND the new ATSC. If they are in the UHF band (channels 13-->), the money adds up, especially for smaller markets or non-big-4 network affiliates.
ATSC is primarily on the UHF band. The FCC is trying to free up the VHF band (2-13) for other uses. Both NTSC and ATSC use 6 MHz worth of bandwidth (for instance channel 6 uses the bandwidth between the frequencies of approximately 82-88 MHz).
The FCC polices all broadcasters. That's why you'll see/hear at the top of the hour, "KXXX YourWesternCity" or "WXYZ YourEasternCity" and you have to keep strict logs of your transmitters output, what commercials were aired, if you went off the air...etc.
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ATSC is a broadcast standard ~1997 NTSC is a broadcast standard pre-dating WWII Right now broadcasters are pumping money into two transmitters -- their old NTSC AND the new ATSC. If they are in the UHF band (channels 13-->), the money adds up, especially for smaller markets or non-big-4 network affiliates. ATSC is primarily on the UHF band. The FCC is trying to free up the VHF band (2-13) for other uses. Both NTSC and ATSC use 6 MHz worth of bandwidth (for instance channel 6 uses the bandwidth between the frequencies of approximately 82-88 MHz). The FCC polices all broadcasters. That's why you'll see/hear at the top of the hour, "KXXX YourWesternCity" or "WXYZ YourEasternCity" and you have to keep strict logs of your transmitters output, what commercials were aired, if you went off the air...etc.