[linux-dvb] cant get channels (DVB-C KNC1)

Paul Schmidt pschmidt at mpex.net
Tue Feb 27 21:10:22 CET 2007


Marcel 't Hart wrote:
> Dear All,
> 
> I have a KNC one with device number 0022. I used the HG sources and
> the patch from E9hack. my fedora box is able to find my device (from
> dmesg):
> KNC1-0: MAC addr = 00:09:d6:6d:75:5b
> DVB: registering frontend 0 (Philips TDA10023 DVB-C)...
> budget-av: ci interface initialised.
> PCI: Found IRQ 9 for device 0000:02:03.0
> PCI: Sharing IRQ 9 with 0000:02:09.0
> budget-av: cam inserted A
> Floppy drive(s): fd0 is 1.44M
> FDC 0 is a post-1991 82077
> dvb_ca adapter 0: DVB CAM detected and initialised successfully
> 
> scandvb will give me this (no succes):
> scandvb -A2 -v  nl-caiw
> scanning nl-caiw

> WARNING: >>> tuning failed!!!
> ERROR: initial tuning failed
> dumping lists (0 services)
> Done.
> 
> I cross checked my frequency, thos are ok.


You might need an amplifier - at least the older KNC1 / Cinergy's are
quite sensitive on the SNR, even when other DVB-C cards tune with no
problem.

If you happen to have Siemens DVB-C card and have a higher BER than ~500
on a frequency, chances are that the KNC1 can't tune - this appears to
be the same with the Windows drivers.

Anything with around 20 dB gain worked for me - however I have a
TDA10021. I can recommend the 2 x 20 db BK Amplifier from kab24.de but
try shorter cabling first if you can.






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