[mythtv-users] transmitters

[norman]

>         I live in SW Wales and my local transmitter details are not
>         included in
>         usr/share/doc/dvb-utils/examples/scan/dvb-t. Could someone
>         please advise
>         me on how to get the details needed so that they may be
>         included?
>         
>         Norman
> 
> You shouldn't actually *need* them if your using a recent mythtv
> version. In mythtv-setup there is an option to do a full scan, which
> should pick up all the channels you're able to receive (at least with
> your DVB-T receiver). Also, your transmitter may just be a repeater
> for another one, which will probably be listed. 

I thought that this might be the situation. My problem is that when I
scan with mythtv no channels are picked up, even though the signal
strength appears to be very good. To get the TV signal to my computer I
have to extend the aerial lead by about 10 metres and I could be losing
signal along this length of coax. So I am looking for a process which
will enable me to find out whether it is a loss of signal or whether
there is something not quite right with the mythtv setup. What I wanted
to do was to see if I could find any channels using scan from dvb-utils
hence the reason for wanting details of local transmitter.

When I tried scan with the nearest transmitter I could find I got the
following:-

norman at gruber:~$ sudo
scan /usr/share/doc/dvb-utils/examples/scan/dvb-t/uk-Llanddona
channels.conf
Password:
scanning /usr/share/doc/dvb-utils/examples/scan/dvb-t/uk-Llanddona
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
initial transponder 738166670 0 3 9 1 0 0 0
initial transponder 770000000 0 3 9 1 0 0 0
initial transponder 794000000 0 3 9 1 0 0 0
initial transponder 818000000 0 3 9 1 0 0 0
>>> tune to:
738166670:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
WARNING: >>> tuning failed!!!
>>> tune to:
738166670:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to:
770000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
WARNING: >>> tuning failed!!!
>>> tune to:
770000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to:
794000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
WARNING: >>> tuning failed!!!
>>> tune to:
794000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE (tuning failed)
WARNING: >>> tuning failed!!!
>>> tune to:
818000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE
WARNING: >>> tuning failed!!!
>>> tune to:
818000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO: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.
norman at gruber:~$ 

Perhaps someone, far more knowledgeable than me, would tell me what this
means and if it helps me to make my decision.

Norman