Hi
I use local cable provider which deliver non-standard DVB-T frequencies.
I have Samsung TV, and from what I can see, it scans channels on MUXes with frequencies: 506,514,522,530,538,546,554,562,570,578,586,594,602,610,618,626,634,642,650,658,666. Technician said it starts with 506000, and jumps by 8000, modulation 256QAM, 6900 transmission speed. In TV everything works.
I have also quad DVB-T card identified as Silicon Labs Si2168. w_scan finds such frequencies:
# T[2] <freq> <bw> <fec_hi> <fec_lo> <mod> <tm> <guard> <hi> [plp_id] [# comment]
#------------------------------------------------------------------------------
T 730000000 8MHz 5/6 NONE QAM64 8k 1/16 NONE # Imperium
T 738000000 8MHz 5/6 NONE QAM64 8k 1/16 NONE # Imperium Cofdm
T 746000000 8MHz 5/6 NONE QAM64 8k 1/16 NONE # Imperium Cofdm
T 754000000 8MHz 5/6 NONE QAM64 8k 1/16 NONE # Imperium
T 786000000 8MHz 5/6 NONE QAM64 8k 1/16 NONE
T 794000000 8MHz 5/6 NONE QAM64 8k 1/16 NONE # IMPERIUM
T 802000000 8MHz 5/6 NONE QAM64 8k 1/4 NONE # Emitel
T 818000000 8MHz 5/6 NONE QAM64 8k 1/8 NONE # IMPERIUM
T 826000000 8MHz 5/6 NONE QAM64 8k 1/16 NONE
(and these are not all, for example there's missing 810000000 frequency, I can add it manually and it later works
Those frequencies also works, I can scan them with w_scan getting for example such a channel:
HGTV HD;TVN:738000:B8C56D0G16M64T8Y0:T:27500:532=27:850=pol@3,851=org:0;6031:0:4315:0:0:0
On the other side the same channel read from TV (using Samsung channel editor from http://www.samychan.com/) shows:
At the end I have two different sets of channels: in TV and in computer tuner. Most channels are in both sources, but some of them are in TV only, and some in computer tuner only.
I really don't understand, why they doesn't see the same frequencies.
It looks like my provider emits on two sets of frequencies, and (at the same time) TV sees only one set, and computer card - second one.
The other option is those frequencies are the same, but somehow re-mapped (but different QAMs suggest it's not true)
I'd like have the same set of channels in both sources. Pls help me understand what's happening here.