DVB - Guard interval changes for Channel Seven Australia

[Nick Bishop]

Binary package hint: dvb-utils

Channel Seven in Australia have changed the guard interval at some of their transmitters: from guard interval 1/8 to 1/16.

This definitely affects these files: /usr/share/doc/dvb-utils/examples/scan/dvb-t/au-{Adelaide,Melbourne,Melbourne-Upwey,Perth,Sydney_Kings_Cross,sydney_north_shore} and possibly several others.

These files were installed from package dvb-utils (Version 1.1.0-9) on Dapper Drake.

[Daniel T Chen (crimsun)]

Is this symptom still reproducible in 8.10 alpha?

[Nick Bishop (nick4soup)]

Don't know.

The project I was working on at the time has been disbanded, and as such I no longer have that (or any other) TV tuner card.

But I am sure there are plenty of punters in Australia. You could get an account at http://www.whirlpool.net.au/ and then ask the people on this thread http://forums.whirlpool.net.au/forum-replies-archive.cfm/900800.html (or a new thread in the same Linux/BSD forum) to relate their experiences with more recent Ubuntu versions.

btw. That thread did mention the Guard Interval problem, on 7.10.

[Nick Bishop (nick4soup)]

One more:

This guy http://www.gedda.info/?p=188 seems to think it works out of the box on Hardy Heron. I can't quite work out whether his transmitter is au-Sydney_Kings_Cross or au-sydney_north_shore (and the "Central Coast" would be something like Newcastle, about 200km north of Sydney).

[Launchpad Janitor (janitor)]

This bug was fixed in the package linuxtv-dvb-apps - 1.1.1+rev1207-4

---------------
linuxtv-dvb-apps (1.1.1+rev1207-4) unstable; urgency=low

  * Switch postinst to check for /dev/MAKEDEV
    - /var/lib/dpkg/info/dvb-apps.postinst: line 6: /sbin/MAKEDEV: No such
    file or directory (Closes: #502831)

linuxtv-dvb-apps (1.1.1+rev1207-3) unstable; urgency=medium

  [ Tobias Grimm ]
  * Conflict with libxbase2.0-bin, libxdb-dev because of `/usr/bin/zap' which is
    also in those packages (Closes: #492141)
  * Added Tobias Grimm <email address hidden> to uploaders
  * Urgency medium for RC bug

  [ Mark Purcell ]
  * dvb-utils Decsription: mention etch to lenny transitions
  * Conflicts: me-tv (<< 0.5.33-2)
    - must conflict against me-tv (<< 0.5.33-2) (Closes: #496557)

linuxtv-dvb-apps (1.1.1+rev1207-2) unstable; urgency=low

  * Urgency medium for RC bug
  * Package: dvb-utils - Tranistional dummy package
    - No transitional package for dvb-utils (Closes: #494012)

linuxtv-dvb-apps (1.1.1+rev1207-1) unstable; urgency=low

  [ Mark Purcell ]
  * New upstream mercurial (Hg) release
    - NEW Package: dvb-apps to match upstream name
    - Replaces:/ Conflicts: dvb-utils
  * Fixed Upstream:
    - fr-Paris should have an added offset of 167000 for each value
    (Closes: #478020)
    - scan fails on Eurobird 28.5E (Sky UK) (Closes: #415264)
    - /usr/share/doc/dvb-utils/examples/scan/dvb-t/au-Sydney_North_Shore
    out of date (Closes: #471829)
    - new file /usr/share/doc/dvb-utils/examples/scan/dvb-t/de-Leipzig
    (Closes: #441984)
    - Example file for dvb-t/de-Koeln-Bonn out of date (Closes: #485449)
    - Is the zap util the latest version? (Closes: #408246)
    - /usr/share/doc/dvb-utils/examples/scan/dvb-t/de-Frankfurt out of
    date (Closes: #471210)
    - please ship example DVB-T file for de-Dresden (Closes: #473145)
    - contains /usr/bin/evtest which is also in lineakd (Closes: #438696)
    - LP: #90752, #180332, #191233
  * Patches included upstream:
    - 02_av7110_loadkeys-BTN.dpatch 03_budget_ci_loadkeys.dpatch
    - 05_scanfiles_not_in_cvs_yet.dpatch 06_scan_uk-heathfield-fix.dpatch
    - 04_scanfiles_from_cvs.dpatch
  * Refresh: 01_README.scan.dpatch 09_x_zap_flush_stdout.dpatch
  * debian/rules: Switch to /usr/share/cdbs/1/class/makefile.mk
  * Update debian/copyright
  * debian/control update Description:
  * Install various READMEs
  * Install test/ under doc/dvb-apps/examples

  [ Thomas Schmidt ]
  * Switched Build-System to cdbs, Build-Depend on cdbs
  * Added Homepage, Vcs-Svn and Vcs-Browser fields to debian/control
  * Bumped Standards-Version to 3.7.3
  * Do not ignore errors of "make clean"

 -- Ubuntu Archive Auto-Sync <email address hidden> Wed, 05 Nov 2008 10:38:39 +0000

[Aaron Roydhouse (aaron-roydhouse)]

Even with this fixed the DVB-T channel information is limited and out-of-date for Australia. It may be unreasonable for the distribution to try and cover all the world's channels and changes. For Australia though, I found good information and made an up to date (March 2009) tuning files. I posted the info here:

    http://ubuntuforums.org/showthread.php?p=6970739#post6970739

For people creating or updating the Australia channel files, I found the DVB-T channel plan for Australia here:

    http://www.dtvforum.info/lofiversion...hp/t19148.html

I found what appears to be up to date local channel info for Australia here:

    http://vk3khb.gak.net.au/tv_lists/

From this information I built good scan files for my area.

Note: I found the different channels using guards of 1/8, 1/16, and sometime 1/32.

Aaron.