[mythtv-users] mendip dtv_multiplex settings

Derek Almond (lists) lists at derekalmond.com
Sat Aug 25 00:34:58 UTC 2007


Hey list, 

I’ve just done a rebuild of the mythtv box, and now I can't get some of my
channels back, they were defiantly there before

I'm using DVB-T (Nova-t 500)

My Nearest transmitter is Mendip, looking at the dtg org website
(http://www.dtg.org.uk/retailer/dtt_channels.html) I’m getting all of the
channels from multiplexes 1,2 and C but  none from A,B and D.

Any ideas why?

I'm not sure what's useful for you to know and what isn’t,

For the channels that are there, signal strength is around 70% (that’s with
a  booster at about 2/3rds of the max boost) or around 50% Without the
booster.

I can post the output from 
scan    /usr/share/doc/dvb-utils/examples/scan/dvb-t/uk-Mendip >
/root/.tzap/channels.conf
if that’s likely to be of any use (since that also has the same channels
missing as mythtv)

 Dtv_multiplex looks like this... can anyone in the area confirm that this
is correct? 

mysql> select * from   dtv_multiplex;
+---------+----------+-------------+-----------+-----------+-----------+----
--------+------+----------+------------+-----------+--------------+---------
----------+----------------+---------+---------------+-----------+----------
----+------------+----------------+---------------------+
| mplexid | sourceid | transportid | networkid | frequency | inversion |
symbolrate | fec  | polarity | modulation | bandwidth | lp_code_rate |
transmission_mode | guard_interval | visible | constellation | hierarchy |
hp_code_rate | sistandard | serviceversion | updatetimestamp     |
+---------+----------+-------------+-----------+-----------+-----------+----
--------+------+----------+------------+-----------+--------------+---------
----------+----------------+---------+---------------+-----------+----------
----+------------+----------------+---------------------+
|       1 |        1 |        4097 |      9018 | 778166670 | a         |
NULL | NULL | NULL     | NULL       | 8         | 3/4          | 2
| 1/32           |       0 | qam_16        | n         | 3/4          | dvb
|              5 | 2007-08-25 00:15:08 |
|       2 |        1 |        8204 |      9018 | 746166670 | a         |
NULL | NULL | NULL     | NULL       | 8         | 1/2          | 2
| 1/32           |       0 | qam_64        | n         | 2/3          | dvb
|             18 | 2007-08-25 01:24:25 |
|       3 |        1 |       12290 |      9018 | 802166670 | a         |
NULL | NULL | NULL     | NULL       | 8         | 1/2          | 2
| 1/32           |       0 | qam_64        | n         | 2/3          | dvb
|             33 | 2007-08-25 01:24:25 |
|       4 |        1 |       16384 |      9018 | 826166670 | a         |
NULL | NULL | NULL     | NULL       | 8         | 3/4          | 2
| 1/32           |       0 | qam_16        | n         | 3/4          | dvb
|             33 | 2007-08-24 20:58:01 |
|       5 |        1 |       20480 |      9018 | 754166670 | a         |
NULL | NULL | NULL     | NULL       | 8         | 3/4          | 2
| 1/32           |       0 | qam_16        | n         | 3/4          | dvb
|              5 | 2007-08-24 20:58:20 |
|       6 |        1 |       24576 |      9018 | 842000000 | a         |
NULL | NULL | NULL     | NULL       | 8         | 3/4          | 2
| 1/32           |       0 | qam_16        | n         | 3/4          | dvb
|             33 | 2007-08-24 20:58:01 |
+---------+----------+-------------+-----------+-----------+-----------+----
--------+------+----------+------------+-----------+--------------+---------
----------+----------------+---------+---------------+-----------+----------
----+------------+----------------+-------------






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