[linux-dvb] Re: SL1935 vs TDA8060TS

[Andrew de Quincey <adq_dvb@lidskialf.net>]

> Eg, 12.456GHz vertical off Optus B1 has a bunch of FTA channels and
> there's nothing on horizontal. Tuning vertical gives me:
>
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI
> FE_HAS_SYNC
> Signal=51182, Verror=0, SNR=56118dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51191, Verror=768, SNR=56217dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51517, Verror=0, SNR=56262dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=50881, Verror=256, SNR=56187dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51195, Verror=110, SNR=56235dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51177, Verror=256, SNR=56184dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51185, Verror=2304, SNR=56232dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51195, Verror=0, SNR=56259dB, BlockErrors=0, (S|L|C|V|SY|)
>
> Tuning horizontal gives me:
>
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI
> FE_HAS_SYNC
> Signal=51511, Verror=0, SNR=56682dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51196, Verror=0, SNR=56658dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51201, Verror=0, SNR=56670dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51186, Verror=0, SNR=56559dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51197, Verror=0, SNR=56586dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51201, Verror=0, SNR=56583dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51196, Verror=0, SNR=56493dB, BlockErrors=0, (S|L|C|V|SY|)
>
> And dumping a stream from either tuning gives me channels I expected on V,
> with TS continuity errors regardless of which polarisation I choose.

Hmmm, hmmm, so its *that* sort of thing - weird effects on the polarity. Well, 
I've seen THAT before - its always been a site installation problem as 
opposed to a hardware problem. This is the kind of thing that is very hard to 
diagnose. Its _probably_ not a hardware problem since tuning works, and you 
get good reception in windows. 

OK, first of all, is there a multiswitch of any sort between you and the dish?