John, The second DTV "biennial" review, FCC 04-192, fully adopts A/65B for major/minor channel number assignment. A/65B states that a station MUST use it's analog channel number as it's DTV major channel number. The FCC concurred with this practice unless an exception is specifically granted by the FCC. Stations can not use their digital channel as a major channel number if they have an NTSC channel as well. John Shutt ----- Original Message ----- From: "John Willkie" <johnwillkie@xxxxxxxxxx> > I'd call it a long list of exceptions: common control or ownership of > channels in the same market, and use CAN use their digital channel as > major, > if they wish to do something unwise. "Why is channel 5 channel 31-1 on > your > TV set?" IIRC, it's a recommendation to use the analog channel; not that > the recommendation needs to be made for existing services. > > John Willkie From FCC 04-192: 153. Major/Minor Channel Numbers. In the NPRM, we noted that the ATSC PSIP standard attaches the assignment of "major channel number" values to a broadcaster's current NTSC RF channel number regardless of the actual RF channel used for DTV transmission, and sought comment on whether there was any need to modify this standard. For example, a broadcaster who operates an NTSC service on channel 4 and a DTV service on channel 27 would use the major channel 4. The PSIP "minor channel number" is used to identify programs and other services, which are a part of the DTV service. For example, channel 4.1 may be an HDTV program service and it may be multiplexed with an SDTV service, which is channel 4.2. According to ATSC, this allows a viewer to easily "surf" from, for example, 4.0 (NTSC) to 4.1 (HDTV) to 4.2 (SDTV). ATSC, MSTV/NAB, and others state that the major/minor channel number scheme established in ATSC A/65B will be useful. ATSC states that the PSIP Standard defines specific requirements for use of "major channel numbers" to provide viewers with a uniform methodology to access DTV services and to avoid conflict with duplicative numbers in a market. The major channel number also allows broadcasters to maintain their local brand identification. We see no reason to modify this standard. During the development of PSIP, ATSC recognized that in some situations broadcasters would need to deviate from the rule that the major channel number is the same as the broadcaster's NTSC channel number and created certain exceptions. We agree with ATSC and MSTV/NAB that these exceptions should provide broadcasters with the necessary flexibility to address most circumstances. To the extent broadcasters have a unique situation that is not provided for in PSIP, the Commission may grant exceptions on a case-by-case basis. The correct TSIDs must be used to ensure that receivers link the analog and digital channels properly. Accordingly, broadcasters are required to transmit the TSIDs assigned for their stations in their digital transmission. During the transition period while both analog and digital signals are broadcast, stations are required to transmit the NTSC TSID in line 21, field 2 in order for the receiver to locate the programs referenced in PSIP. From ATSC A/65B 3.3 Major and Minor Channel Numbers When PSIP is used for terrestrial broadcast, care must be taken in the assignment of major and minor channel numbers to avoid conflicts. For example, the PSIP standard indicates that for the US and its possessions, a terrestrial broadcaster with an existing NTSC license shall use a major channel number for digital services that corresponds to the NTSC RF channel number in present use for the analog signal. For cable, such restrictions are technically unnecessary. The use or potential re-assignment of a broadcaster's major channel number is beyond the scope of this standard. For terrestrial broadcast, the major channel number is limited to the range 1 to 99 for ATSC digital television or audio services. For cable, major channel numbers may range from 1 to 999. For minor channel numbers, this Standard specifies that zero shall be used for NTSC analog television services, 1 to 99 for ATSC digital television or audio only services, or 1 to 999 for data services. Minor channel numbers for cable, on the other hand, have no restrictions on use: they can range from 0 to 999 for any type of service. ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.