Hi Christoph,
Just had a look at your zip archive and the files.
Christoph Pfister schrieb:
I've updated my de-files:
- fixed the url (inserted the wrong one by accident)
- fixed vhf channels (they were using 8mhz because my trigger was wrong)
- add the the "# CHxy: name of programs" information
- 563 MHz --> 562 MHz (their pdf seems to use a wrong frequency for channel 32)
You are right. 562 MHz as nominal frequency is correct, because for
DVB-T this is calculated 306 MHz + channel number x 8 MHz. VHF would be
142.5 MHz + channel number x 7 MHz.
It's just a centre frequency used for tuning purposes. The DVB-T signal
should (ideally) use a 8 MHz width space from 559.25 MHz to 567.25 MHz
for Ch 32.
But I haven't looked at the new documents proposed in this thread yet.
I didn't compare that either. Could also be difficult, because of
different revision dates.
Looking through your files in the zip archive, it rose some questions in
my mind:
a) is it really useful to have scan files by federal state (Bundesland)?
Just let me explain with an example. I live in Sachsen-Anhalt on the
north of the Harz Mountains area. To effectivly ("best") use DVB-T I do
combine both transmitters in Sachsen-Anhalt (Mt. Brocken) and from
Niedersachsen (Braunschweig). This is because some channels are only
available from a specific transmitting site (private channels only from
Braunschweig, RBB only from Brocken). The same applies to other regions
in Sachsen-Anhalt (south east will have reception from Sachsen and
Thüringen, north east from Berlin / Brandeburg etc.)
I think, this situation will also apply to other federal states.
=> I personally would prefer to stay with or alternatively provide a
region based file, so I could look up and combine the regions of
interest. What do you think?
b) Conflicting information
In your "Sachsen-Anhalt" scanfile you list on Ch 24 the ARD multiplex
with (Halle-Stadt):
T 498000000 8MHz 2/3 NONE QAM64 8k 1/4 NONE
# CH24: Das Erste, arte, Phoenix, EinsFestival
which is for a large part of Sachsen-Anhalt useless (we can't receive
that), as we actually receive on Ch 24 (from Braunschweig)
T 498000000 8MHz 2/3 NONE QAM16 8k 1/4 NONE
# CH24: RTL, RTL II, Super RTL, VOX
=> have a look at QAM, its QAM64 in your scanfile and QAM16 for Ch24 we
actually receive.
=> Does it matter, e.g. would instead of the unreceivable Ch24 from
Halle-Stadt the Braunschweig Ch24 be found? (I did not test this).
c) You clearly missed out some information. I noticed for instance Ch 37
in Leipzig (Sachsen) which is the "Leipzig 1" multiplex
Please have a look at the already posted link to SLM or my homepage:
http://www.to-st.de/content/projects/dvb-t/dvbt-sender-leipzig.de.html
On the other hand I doubt, that it would be a useful entry into a
"Sachsen" scanfile because reception is limited to the area of the city
of Lepzig.
As I have no overview of regional "special projects" in other area, such
omissions in the files may apply to other areas too.
@Barry
Just as a sidenote and for historical purposes I may point you to:
http://www.ifn.ing.tu-bs.de/itg/docs/030403Braunschweig/ITG030403Hoehne_Frequenzplanung.pdf
which gives an overview how in 2003 the concept for the north of Germany
had been planned. This information is obsolete and has changed, but the
document show a bit, how decisions evolved in consideration of federal
state and "Medienanstalt" boundaries (e.g. Bremen) etc.
Regards, Tobias
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