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TBS 6814 ISDB-T Brazil - card not picking up services for all FTA channels

Added by Alex Rudd about 6 years ago

**Version of TVHeadend - HTS Tvheadend 4.2.6-16~g42e737f
Running on what OS and version - Ubuntu 16.04.2 LTS (Xenial)
Package that came with the OS or something you compiled yourself? - standard install (from apt-get install)
Adapter/tuner chipset or make/model - TBS 6814
description: Multimedia controller
product: DVB-S2 4 Tuner PCIe Card
vendor: TBS Technologies
physical id: 0
bus info: pci@0000:04:00.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=TBSECP3 driver latency=0
resources: irq:30 memory:dfac0000-dfafffff

Detailed description of problem. If possible: Steps to duplicate.*

TVheadend is configured, and when scanning, finds about 40 FTA channels available in my area outside Sao Paulo (between Vargem Grande & Sao Roque, for any Brazilians).

The one channel I cannot get is Globo (probably the main channel in Brazil) .

When I connect an old Samsung TV to the same antenna that is connected to the TBS card, it detects Globo, and is a perfect reception, without any issues, which suggest the antenna position is ok.

When I connect the same old Samsung to a cheap indoor antenna (also facing the wrong direction), it detects Globo, and is near-perfect reception, with occasional picture freeze, but still watchable.

I am wondering if there is something in my card setup, or TVheadend setup that is preventing me from receiving Globo.

Any advice on where I can start troubleshooting this would be greatly appreciated.


Replies (4)

RE: TBS 6814 ISDB-T Brazil - card not picking up services for all FTA channels - Added by Alex Rudd about 6 years ago

I was using the pre-defined muxes, which come up with a list of locations in Brazil - I used the generic one at the top of the list, Brazil: br-Brazil

This is in /usr/share/tvheadend/data/dvb-scan/isdb-t

I also tried editing Channel 18 - which I believe is for Globo - this matches the link you sent me. However, I also found this link below, which shows Canal 18 - Globo - 495,25 Mhz

[[https://www.htforum.com/forum/threads/canais-e-frequencias-tv-digital-sp.59277/]]

[channel 18]
DELIVERY_SYSTEM = ISDBT
BANDWIDTH_HZ = 6000000
FREQUENCY = 497142857
INVERSION = AUTO
GUARD_INTERVAL = AUTO
TRANSMISSION_MODE = AUTO
ISDBT_LAYER_ENABLED = 7
ISDBT_SOUND_BROADCASTING = 0
ISDBT_SB_SUBCHANNEL_ID = 0
ISDBT_SB_SEGMENT_IDX = 0
ISDBT_SB_SEGMENT_COUNT = 0
ISDBT_LAYERA_FEC = AUTO
ISDBT_LAYERA_MODULATION = QAM/AUTO
ISDBT_LAYERA_SEGMENT_COUNT = 0
ISDBT_LAYERA_TIME_INTERLEAVING = 0
ISDBT_LAYERB_FEC = AUTO
ISDBT_LAYERB_MODULATION = QAM/AUTO
ISDBT_LAYERB_SEGMENT_COUNT = 0
ISDBT_LAYERB_TIME_INTERLEAVING = 0
ISDBT_LAYERC_FEC = AUTO
ISDBT_LAYERC_MODULATION = QAM/AUTO
ISDBT_LAYERC_SEGMENT_COUNT = 0
ISDBT_LAYERC_TIME_INTERLEAVING = 0

RE: TBS 6814 ISDB-T Brazil - card not picking up services for all FTA channels - Added by Alex Rudd about 6 years ago

I ran a Fluke cable tester over the coax and it looks like I need to re-crimp the connector on the Antenna end (38m cable run).

While this is not stopping the Samsung from picking up Globo correctly, it might stop the TBS card if it is more 'sensitive'?

I will report back once done to see if this makes any difference.

RE: TBS 6814 ISDB-T Brazil - card not picking up services for all FTA channels - Added by Klein Johns over 4 years ago

I'm having the same problem! I'm in Belo Horizonte / MG and I can't find TV GLOBO HD

I'm using pixelview ISDBT FULL HD USB

12.1 - Globo HD
Channel: 33
Frequency: 587000 KHz
Modulation: 8K-QPSK
PID video: 273
PIDs audio: 274 (áudio 1), 275 (áudio 2), 276 (áudio 3) e 277 (áudio 4)
PCR: 256

In my tvheadend 4.3 I found 39 channels. I found "GLOBO 1 seg" but I can't find Globo HD

I saw that I found 2 services in 587000 KHz but it just show only one channel (globo 1 seg)

How is the solution to find Globo HD?





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