On Wed, 9 Dec 2009, Newsy Paper wrote:
> no matter if I use Igors or Manus driver, there's no lock on 11303 h 22000
> 2/3 8psk. Other users at vdr-portal report same problem.
>
> The strange thing is that all other transponders that use 22000 2/3 8psk do
> work but this transponder doesn't. It worked fine until december 3rd when
> uplink moved to Vienna. I think they changed a parameter like rolloff or
> inversion and the dvb-s2 part of stb6100 is buggy.
Oh jeez, non-wrapping mail... Anyway, without bothering to see
what I'm replying to, here's the value I get from parsing the
NIT table today:
Frequency: 18023029 (= 11.30275 GHz)
Orbital_position: 402 (= 19.2)
West_East_flag: 1 (0x01) [= EAST]
Polarisation: 0 (0x00) [= linear - horizontal]
Kind: 1 (0x01) [= DVB-S2]
Roll Off Faktor: 0 (0x00) [= Alpha 0.35]
Modulation_type: 2 (0x02) [= 8PSK]
Symbol_rate: 2228224 (= 22.0000)
FEC_inner: 2 (0x02) [= 2/3 conv. code rate]
Now, I get the following for a different transponder, with a
different roll-off:
Frequency: 17920117 (= 11.17075 GHz)
Orbital_position: 402 (= 19.2)
West_East_flag: 1 (0x01) [= EAST]
Polarisation: 0 (0x00) [= linear - horizontal]
Kind: 1 (0x01) [= DVB-S2]
Roll Off Faktor: 1 (0x01) [= Alpha 0.25]
Modulation_type: 2 (0x02) [= 8PSK]
Symbol_rate: 2228224 (= 22.0000)
FEC_inner: 2 (0x02) [= 2/3 conv. code rate]
But at the same time I see the same roll-off reported on all
but the 0,25 transponder within the limited NIT table I
nabbed, regardless of 9/10 FEC or 2/3+22000.
I don't know if the above NIT data is 100% accurate, or if
it reflects a change from what it was before. Actually, I
don't know if I'm parsing everything, because I vaguely
recall there are other selectable options on a real receiver
(which I've never had in front of me) pertaining to pilot
on or off, which apparently affect tuning ability.
barry bouwsma
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