[linux-dvb] Tuning Nebula card to Saddleworth UK transmitter

["Carey" <c.blunt@tiscali.co.uk>]

Hello all,

  I'm trying to get my Nebula card to work with MythTV under Red Hat Fedora Core 2 but I can't seem to get the card tuned, i think

i'm nearly there but I need a bit of help.I think I have the LinuxTV drivers loaded and working, but my main problem is that I am based in the UK and my nearest

transmitter is Saddleworth which I think is a relay for WinterHill (I can only get a *VERY* weak reception from WinterHill directly).

When I run ./scan dvb-t/uk-WinterHill I get the following.....

scanning dvb-t/uk-WinterHill

using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'

initial transponder 754166670 0 3 0 1 0 0 0

>>> tune to: 754166670:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_NONE:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE

WARNING: >>> tuning failed!!!

>>> tune to: 754166670:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_NONE:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed)

WARNING: >>> tuning failed!!!

ERROR: initial tuning failed

dumping lists (0 services)

Done.

Which i'm guessing means that i'm looking at the wrong frequencies. I randomly tried ./scan dvb-t/uk-BlackHill and that does seem to pick up something which looks like a faint

WinterHill signal. Anyway i've output that to a channels.conf with about 10 lines in it like those below..

ITV 1:634167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:515:653:8267

ITV 2:634167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:2819:2820:8325

Channel 4:634167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:2829:2830:8384

but no BBC1 or anything like that

if I try a ./tzap "ITV 1" I get:

using '/dev/dvb/adapter0/frontend0' and

'/dev/dvb/adapter0/demux0'

tuning to 634167000 Hz

video pid 0x0203, audio pid 0x028d

status 03 | signal 0000 | snr 0000 | ber 00000000 | unc 00000000 |

status 03 | signal 0000 | snr 0000 | ber 00000000 | unc 00000000 |

status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

status 1f | signal 0000 | snr 0000 | ber 00000000 | unc 00000000 | FE_HAS_LOCK

Which looks like it is a lock , i'm told that Signal 0000 thing is not a problem?

I only have about 10 stations in my channels.conf file which isn't right and I know I get a good signal so my question then is, do I need to create a uk-Saddleworth

file so I can get a better signal from that transmitter and if so how do I go about doing this? I thought I might be able to get the information I need from

http://www.bbc.co.uk/reception/tv_transmitters/index.shtml but I can't find what I need in the right format.

If anyone can help that would be great, I am a relative noob to DVB and Linux so be gentle. I can post output from lsmod or dmesg if anyone thinks I have maybe not got the card configured right.

Apologies for the slightly bloated post, I wanted to get all the info in. Nothing worse than a noob with a problem and no info to work on! :)

cheers

   Carey