[vdr] LNB settings - what should they be?

Ian Bates ian_and_joanna at talktalk.net
Sat Sep 25 11:57:39 CEST 2010


On 25 Sep 2010, at 10:20, Simon Baxter wrote:

> Hi
> 
> My dvb-s LNB is a Ku-Band LNBG DKF-2024.
> 
> The box says:
> Input 11.70-12.50 Ghz
> L.O. 10.75 Ghz
> Noise 0.6dB
> Gain 60dB
> 
> If I set VDR up as follows:
> Use DiSEqC:                no
> SLOF (MHz):                10750
> Low LNB frequency (MHz):   11700
> High LNB frequency (MHz):  12500
> 
> When I change channels I get:
> Sep 25 21:15:18 localhost vdr: [2058] ERROR: frontend 0/0: Invalid argument
> Sep 25 21:15:18 localhost kernel: DVB: adapter 0 frontend 0 frequency 12456000 out of range (950000..2150000)
> 
> If I set it to
> Use DiSEqC:                no
> SLOF (MHz):                11300
> Low LNB frequency (MHz):   11300
> High LNB frequency (MHz):  11300
> 
> I don't get this error, but get:
> Sep 25 21:15:57 localhost vdr: [2058] frontend 0/0 timed out while tuning to channel 3, tp 112456
> Sep 25 21:17:02 localhost vdr: [2058] frontend 0/0 timed out while tuning to channel 3, tp 112456
> Sep 25 21:18:07 localhost vdr: [2058] frontend 0/0 timed out while tuning to channel 3, tp 112456
> 
> I'm using a dm1105 dvb-s card which works under Windows on the same box, but szap and VDR do not.  I can scan channels though with:
> ./scan dvb-s/OptusB1-NZ -l 11300 -x 0
> 
> OptusB1-NZ being:
> S 12456000 H 22500000 AUTO
> S 12483000 H 22500000 AUTO
> 
> 
> Any suggestions?


An 'it works for me' and a suggestion.

- 'it works for me':

I have a Universal LNB, I'm in the UK, my VDR settings are (setup.conf),

LnbFrequHi = 10600
LnbFrequLo = 9750
LnbSLOF = 11700

- A Suggestion:

From,

http://www.satsig.net/cgi-bin/yabb/YaBB.pl?board=ivsat-asia;action=display;num=1142160105

"
Receivers typically accept L band signals in a range starting at 950 MHz.   If you want to receive satellite signals starting at 10.7 GHz then you need a LNB LO of 9.75 GHz.  Maybe Astro are starting some services in the band 10.7 - 10.95 GHz ? 
 
For satellite TV, 'universal' LNBs with switchable LO frequencies of 9.75 and 10.6 GHz seem to be common. 
 
For Ku band reception, LO frequencies of 10, 10.75 and 11.3 GHz are also available. 
"

No idea, just guessing, try rearranging your values in the same sort order a my 'it works for me' section,

High LNB frequency (MHz):  11700
Low LNB frequency (MHz):   10750
SLOF (MHz):                12500

Don't know if this will fry your silicon.
??

Ian.




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