I looked on the NAB and FCC websites to find Symbol and Pid assignment for transponders but no luck. Does anyone know of a list that shows each OTA transponder data?
DTV OTA Channel data
- Thread starter satcom1
- Start date
- Latest activity Latest activity:
- Replies 5
- Views 2K
Yep, i can do that. But I don't know from that how many symbol rates can be assigned and what they are. There is probably some structure to symbol, apid, vpid and sid. It may be in some IEEE document but because it's in the data stream of the transponder the FCC doesn't care. So far I know of only 192800 SR/8VSB, I wonder if there are others and if they are assigned by class of service. Just my EE coming out.
I think only the one symbol rate is allowed, but I'm not really sure.
I think they should actually let TV stations voluntarily reduce SR and/or increase FEC to improve reception. Some of the stations like religious, independents, etc - while they will go digital, they may not ever go HD, and some of them aren't even interested in multicasting. So why not let them use that extra bandwidth to increase their effective coverage area and signal reliability?
I think they should actually let TV stations voluntarily reduce SR and/or increase FEC to improve reception. Some of the stations like religious, independents, etc - while they will go digital, they may not ever go HD, and some of them aren't even interested in multicasting. So why not let them use that extra bandwidth to increase their effective coverage area and signal reliability?
ATSC DTV is a different relhm. In Analog bleed over is a problem and therefore guard channels are used. In Digital streaming not a problem. In fact CDMA lives in a swirls of mixing data streams that are decoded with less error then tdma or gsm signals.
