[mythtvnz] Using Universal Multi-LNB (D1 & D2)

[Johan Schuld]

Hi All,

Recently I decided I also wanted to watch some channels on Optus D2, so did
some research and decided to go for a Dual-LNB setup, which apparently works
with a standard sky dish (receive D1 and D2 without a motor). See
http://www.ultrapower.co.nz/dual_ku_band_lnbf.html. The guy sells them for
$39 incl posting (Akl). It's a Zinwell multi Universal Ku band LNBF using
Diseqc for switching between LNB.

So I've installed one, It works although I have quite poor reception on D2
though.

I have initially connected it to a FTA STB I had lying around as it gives
better signal strength info. So with that box I've confirmed my dish is
working.

I have problems with getting it to work in MythTV though (I had it working
fine with my Standard sky dish LNB). In the Diseqc setup menu of mythttv
setup I've removed my exising LNB and added a "Switch", with 2 ports. Each
of these ports having a "LNB" underneath them configured to be "Universal
(Europe)". The frequencies correspond with the one of the LNB.

When searching for channels I get no result though, none for D1 and none for
D2, I've tried multiple combnations (trying freeview transponder frequencies
on D2 and D1) just to check if somehow the diseqc switching is not done
properly.

I took one step back and used "dvbtune" and "scan" with mixed result. scan
had no luck at all, but dvbtune does get a lock on freeview. I am not sure
which one is "lower level" though.

Does someone have a similar setup working? I have the feeling it's the
Diseqc switching as I see quite a few reports on internet forums with
problems.

See here my dvbtune output, any hints welcome.


innopvr:~ # dvbtune -f 12456 -s 22500 -p h -D 1
Using DVB card "Conexant CX24123/CX24109", freq=12456
tuning DVB-S to Freq: 1856000, Pol:H Srate=22500000, 22kHz tone=off, LNB: 1
DISEQC SETTING SUCCEDED
Getting frontend status
Event:  Frequency: 12456000
        SymbolRate: 22500000
        FEC_inner:  3

Bit error rate: 0
Signal strength: 63744
SNR: 65284
FE_STATUS:




 tuning DVB-S to Freq: 1883000, Pol:H Srate=22500000, 22kHz tone=off, LNB: 1
DISEQC SETTING SUCCEDED
Getting frontend status
Event:  Frequency: 12483000
        SymbolRate: 22500000
        FEC_inner:  3

Bit error rate: 0
Signal strength: 63744
SNR: 64330
FE_STATUS:


vbstream -f 12483 -s 22500 -p h -D 1 -v 1920 | mplayer


Cheers,
Johan Schuld
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.ourshack.com/pipermail/mythtvnz/attachments/20080619/5b65d0d6/attachment.htm