I just did a autoscan on my digital TV, and it found a lot of channels in the notation 102-2, 102-3, 103-3, etc. What is the meaning behind this notation ? Why not just have sequential numbers?
Hi Synbios,
I think what your talking about are "side bands" for multicasting here in the Portland, Or area channel 8 KGW (NBC) is using 8 for programming analog and 8-1 for digital programming and 8-2 for 24hr weather, the same with OPB (Oregon Public Broadcasting) is using 10, 10-1, 10-2, 10-3 each with diffrent programming.
8-VSB (8-level vestigial sideband ) is the FCC standard radio frequency ( RF ) modulation (a process of adding data to a signal carrier ) format chosen by the ATSC for the broadcast of digital television (DTV) to consumers.
The 8-VSB mode includes eight amplitude levels that support up to 19.28 Mbps of data in a single 6 Mhz channel (there is also a 16-VSB is mode that has 16 amplitude levels and supporst up to 38.57 Mbps of data on a 6 Mhz channel). 8-VSB is perfect for the simultaneous transmission of more than one DTV program (multicasting) and the transmission of data along with a television program (datacasting) because it supports large data payloads.
Hope this is what your looking for ...
Regards,
Fuzzy