[linux-dvb] Please see if you can help: Twinhan VP 1025 DVB-SPCICard

Dave Schile daveschile at hotmail.com
Mon Aug 14 22:44:03 CEST 2006

Well, I tried different compiles and saw nothing different.  I found that 
this LNB uses an oscillator running at 11.25 GHz.  So I put these lines in 
the dvb_defaults.h file for dvbtune:

/* DVB-S */

// With a diseqc system you may need different values per LNB.  I hope
// no-one ever asks for that :-)

#define SLOF (11700*1000UL)
#define LOF1 (11250*1000UL)
#define LOF2 (11250*1000UL)

is that right?

Still, the unit seems not to tune at all.  I keep thinking I'm missing 
something simple.  Also, the "Opperation not supported" messages have me 
dumbfounded while trying to 'dvbtune -m'

Let me ask you this:  Once you know the correct oscillator value (11.25) do 
you adjust the freq. from lyngsat to get the number you give to dvbtune?  
I've just been using the freq. number in the first column on the lyngsat 

Dave Schile

>>Unfortunately I dont know much about the LNB.  I went and remove it from 
>>the dish but the identification sticker has worn away.  It came from a 
>>common 18 inch DirecTV dish.  there are two LNB's in there, I think, 
>>because there are two coax outs.  I'm only using one at the moment because 
>>I dont have a disecq.
>>Do you thnk this LNB w]ll cause my defines in dvbtune.c to need changing?
>>Dave Schile
>Yes, try setting the high and low defines to the same value in three 
>different compile tests. 10.6, 10.75, 11.25. Leave the LNB switch setting 

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