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Loooking for a DVBS2 tuner can Lock AMC21

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Loooking for a DVBS2 tuner can Lock AMC21

Postby spacedvb » Mon Aug 12, 2013 9:44 am

Does anyone know which tuner model from TBS use AVAlink AVL2108 DVBs2 ,.

The reason I am asking I have been test 6984 , 8920, 6981 and I can't LOCK AMC1 125West on frequency:

11740 V,11760 H,11780. V,11800 H,11980 V

SBR: 30000

I can,t LOCK this satellite eider 50West same problem.

Does anyone has been lock this satellite under any TBS card??

I have been use Linux OS Ubuntu 10.4 , with Test under DVBLAST,,Astra 3.10,MumuDVB ..

does anyone can help me??
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Re: Loooking for a DVBS2 tuner can Lock AMC21

Postby updatelee » Mon Aug 12, 2013 12:50 pm

Are you able to get signal on those ? pretty sure those are the caribbean spot beam

http://satbeams.com/footprints?position=235

Those are all also Nagra 3 according to lyngsat, so you'll have to have a sub and some way to interface your sub card (if that provider even uses a card)

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Re: Loooking for a DVBS2 tuner can Lock AMC21

Postby crazycat » Tue Aug 13, 2013 5:02 am

spacedvb Wrote:Does anyone know which tuner model from TBS use AVAlink AVL2108 DVBs2


no one :)

spacedvb Wrote:The reason I am asking I have been test 6984 , 8920, 6981 and I can't LOCK AMC1 125West on frequency:
11740 V,11760 H,11780. V,11800 H,11980 V
SBR: 30000
I can,t LOCK this satellite eider 50West same problem.
Does anyone has been lock this satellite under any TBS card??


Conexant CX24116,24117 demods suuport DVB-S2 with max SR ~30000Ks, but often unstable lock 8PSK,30000Ks transponders.
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Re: Loooking for a DVBS2 tuner can Lock AMC21

Postby gfi » Tue Aug 13, 2013 11:05 am

Conexant CX24116,24117 demods suuport DVB-S2 with max SR ~30000Ks, but often unstable lock 8PSK,30000Ks transponders.


Thats look like similar issue on 85E - 12600, V, 30000, S2 8PSK.
I haven't problem with lock, but sometimes (on switch process) packets dropping.

Is that (8PSK, SR 30000, FEC 2/3) limit for used Conexant chip?
Depend of total TPs bitrate , or delivery system/modulation?

Thx.
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Re: Loooking for a DVBS2 tuner can Lock AMC21

Postby crazycat » Thu Aug 15, 2013 8:31 am

Limitations for DVB-S2 FEC LDPC/BCH decoder. But look like this demod firmware bugs also, because SR=30000 and must work :)
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