[mythtv-users] Missing channels from Astra 28.2E

Terjesen Jens Peder Jens.Peder.Terjesen at devoteam.com
Mon May 10 15:05:34 UTC 2010

Chris Dennis wrote:
Hello MythTV people

This is a problem which I've had for a year or more, but I haven't had
time until now to investigate it fully.

Basically, my list of channels is incomplete, whether I use MythTV's
scanning, or DVB-utils' 'scan' command.

I'm using a Hauppauge Nova-S-Plus card, which shows up in lspci as:
   00:08.2 Multimedia controller: Conexant Systems, Inc. CX23880/1/2/3
    PCI Video and Audio Decoder [MPEG Port] (rev 05)

The output of this command

   scan -a 0 -x -1 -t 7 -U -o zap -l UNIVERSAL ./Astra-28.2E

when ./Astra-28.2E contains this

   S 10773000 H 22000000 5/6

is this (heavily edited)

   scanning ./Astra-28.2E
   using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
   initial transponder 10773000 H 22000000 5
   >>> tune to: 10773:h:0:22000
   DVB-S IF freq is 1023000
   0x0000 0x18af: pmt_pid 0x0000 BSkyB -- BBC THREE (not running)
   0x0000 0x18bb: pmt_pid 0x0101 BSkyB -- BBC 1 NI (running)
   0x0000 0x18bf: pmt_pid 0x010b BSkyB -- FIVE (running)
   0x0000 0x189d: pmt_pid 0x0100 BSkyB -- BBC 1 London (running)
   0x0000 0x189e: pmt_pid 0x0102 BSkyB -- BBC 2 England (running)
   0x0000 0x18a2: pmt_pid 0x0104 BSkyB -- ETV (running)
   0x0000 0x18a5: pmt_pid 0x0000 BSkyB -- BBC TES 2 (not running)
   0x0000 0x18ab: pmt_pid 0x0103 BSkyB -- BBC TES 3 (running)
   0x0000 0x18ac: pmt_pid 0x0000 BSkyB -- BBC FOUR (not running)
   0x0000 0x18ad: pmt_pid 0x0106 BSkyB -- CBBC Channel (running)
   0x0000 0x18ae: pmt_pid 0x0105 BSkyB -- CBeebies (running)
   Network Name 'ASTRA'
   ... [lots of lines snipped]
   >>> tune to: 11953:h:0:27500 (tuning failed)
   DVB-S IF freq is 1353500
   WARNING: >>> tuning failed!!!
   ... [lots more lines snipped]

In other words, it finds some channels and not others.  Specifically,
the information on pages such as
suggests that BBC Radio 4 (and others) should be available on
11953:h:027500, but I've never been able to get it.

I can get other radio stations, such as BBC R5L on 10802:h:0:22000.

Has anyone else experienced this?

Is it likely to be the fault of the tuner card, or the LNB, or the
direction the dish is pointing in?


Chris Dennis                                  cgdennis at btinternet.com
Fordingbridge, Hampshire, UK


I guess you are using an universal LNB?

It looks like you are only getting the low-band channels?
   >>> tune to: 10773:h:0:22000
   DVB-S IF freq is 1023000
I.e. 10733 Mhz - 9750 Mhz = 1023 Mhz -> OK
 >>> tune to: 11953:h:0:27500 (tuning failed)
   DVB-S IF freq is 1353500
I.e. 11953 Mhz - 10600 Mhz = 1353 Mhz -> NOK.

It that is the case it would mean that the tone-switching on your card is broken.

I bought a Hauppauge Nova-S-Plus a few years ago that functioned as it should for a few months, then the tone-switching stopped working.

Fortunatly for me the webshop replaced it with a Hauppauge HVR-4000 at no extra charge.


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