Success with German DVB-T2?

Ingolf Steinbach ingolf.steinbach at gmail.com
Fri Mar 3 13:59:55 UTC 2017


Olivier, Nils,

thanks for this information. The link to the VDR wiki seems promising;
and maybe Nils' guess wrt encryption could be an explanation.
Unfortunately there is only sparse information on the unencrypted
programs (which are the only ones I am interested in). You only get
the information that you need components with the "DVB-T2 HD" logo if
you want to receive the *encrypted* programs. I have yet to find some
statement if you really need CI+ support if you want to watch the
unencrypted programs only.


This is what w_scan reports:
[...]
Scanning DVB-T...
[...]
474000: (time: 00:16.736)         signal ok:    QAM_AUTO f = 474000
kHz I999B8C999D999T999G999Y999 (0:0:0)
       QAM_AUTO f = 474000 kHz I999B8C999D999T999G999Y999 (0:0:0) :
updating transport_stream_id: -> (0:0:14849)
       QAM_AUTO f = 474000 kHz I999B8C999D999T999G999Y999 (0:0:14849)
: updating network_id -> (0:12346:14849)
       QAM_AUTO f = 474000 kHz I999B8C999D999T999G999Y999
(0:12346:14849) : updating original_network_id -> (8468:12346:14849)
       updating transponder:
          (QAM_AUTO f = 474000 kHz I999B8C999D999T999G999Y999
(8468:12346:14849)) 0x0000
       to (QAM_64   f = 474000 kHz I999B8C23D0T8G4Y0 (8468:12346:14849)) 0x405A
[...]
Scanning DVB-T2...
[...]
474000: skipped (already known transponder)
[...]
754000: (time: 03:23.585)         signal ok:    QAM_AUTO f = 754000
kHz I999B8C999D999T999G999Y999P0 (0:0:0)
       QAM_AUTO f = 754000 kHz I999B8C999D999T999G999Y999P0 (0:0:0) :
updating transport_stream_id: -> (0:0:16481)
       QAM_AUTO f = 754000 kHz I999B8C999D999T999G999Y999P0
(0:0:16481) : updating network_id -> (0:12352:16481)
       QAM_AUTO f = 754000 kHz I999B8C999D999T999G999Y999P0
(0:12352:16481) : updating original_network_id -> (8468:12352:16481)
       updating transponder:
          (QAM_AUTO f = 754000 kHz I999B8C999D999T999G999Y999P0
(8468:12352:16481)) 0x0000
       to (QAM_AUTO f = 650000 kHz I999B8C999D999T32G16Y999P0
(8468:12352:16481)) 0x4004
       new transponder: (QAM_AUTO f = 722000 kHz I999B8C0D0T32G16Y0P1
(8468:12352:16497)) 0x4004
[...]
tune to: QAM_64   f = 474000 kHz I999B8C23D0T8G4Y0 (8468:12346:14849)
(time: 03:51.457)
       new transponder: (QAM_16   f =      0 kHz I999B8C23D0T8G4Y0
(8468:12336:12290)) 0x415A
       service = Das Erste (ARD)
       service = ONE (ARD)
       service = arte (ARD)
       service = PHOENIX (ARD)
       new transponder: (QAM_16   f =      0 kHz I999B8C23D0T8G4Y0
(8468:12298:2561)) 0x415A
       new transponder: (QAM_16   f =      0 kHz I999B8C23D0T8G8Y0
(8468:12289:257)) 0x415A
       new transponder: (QAM_16   f =      0 kHz I999B8C23D0T8G8Y0
(8468:12289:258)) 0x415A
       new transponder: (QAM_16   f =      0 kHz I999B8C23D0T8G4Y0
(8468:12440:38912)) 0x415A
       new transponder: (QAM_16   f =      0 kHz I999B8C23D0T8G4Y0
(8468:12368:20481)) 0x415A
       new transponder: (QAM_16   f =      0 kHz I999B8C34D0T8G4Y0
(8468:12361:18689)) 0x415A
[...]
tune to: QAM_AUTO f = 650000 kHz I999B8C999D999T32G16Y999P0
(8468:12352:16481) (time: 04:34.122)
----------no signal----------
tune to: QAM_AUTO f = 650000 kHz I999B8C999D999T999G999Y999P0
(8468:12352:16481) (time: 04:40.218)  (no signal)
----------no signal----------
tune to: QAM_AUTO f = 722000 kHz I999B8C0D0T32G16Y0P1
(8468:12352:16497) (time: 04:46.278)
----------no signal----------
tune to: QAM_AUTO f = 722000 kHz I999B8C999D0T999G999Y0P1
(8468:12352:16497) (time: 04:52.326)  (no signal)
----------no signal----------
retrying with center_frequency = 538000000
tune to: QAM_16   f = 538000 kHz I999B8C23D0T8G4Y0 (8468:12336:12290)
(time: 04:58.374)
----------no signal----------
tune to: QAM_AUTO f = 538000 kHz I999B8C999D0T999G999Y0
(8468:12336:12290) (time: 05:04.422)  (no signal)
----------no signal----------
retrying with center_frequency = 682000000
[...]


(In fact, there are 8 more DVB-T services than the four shown above,
but I left them out on purpose.)

What I don't understand is this: All (traditional) DVB-T transponders
show an entry "updating transponder: something to something_else" but
with the same frequency; the only DVB-T2 transponder (@754000) is for
some reason updated to f=650000 kHz, and then a new transponder
@722000 is reported. And I do not see an attempt to "tune to: QAM_xyz
f = 754000".

Ingolf




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