cant lock on to 8psk trandponders with dvb card

**K9SAT** · 09-09-2005 04:35 PM

hey guys im trying to take a peek at a few transponders off of echo 5 at 129 but i cant get a lock on to them..
the one pitcular tp of intrest is 12.399 r sr 21500 fec 7/8 any idea why i cant lock on to those tp... and I cant find anywhere in my dvb programs to change the fec to try and get a lock I have a twinihan dvbs any help is apprecated

**beeb** · 09-09-2005 04:48 PM

You can't do that with any DVB card currently on the market.

**pro96** · 09-09-2005 04:53 PM

Originally Posted by beeb

You can't do that with any DVB card currently on the market.

Bummer

**sharris** · 09-09-2005 05:06 PM

Ya I seem to recall that the cheapest 8sp decoder was around 2000 clams. Not really worth it. The only fta I can think of off hand are the 8spk CBC off of anik and the few off of either amc 1 or 4, can't remember which (both nbc). anyways, sorry.

**K9SAT** · 09-09-2005 05:20 PM

very much so a bummer... what about turbo psk?

**sharris** · 09-09-2005 05:30 PM

Never heard of it. what the heck is that.

**ultatryon** · 09-09-2005 06:07 PM

I am unfamilear with the term, but it sounds like high-bitrate QPSK signals, like 35+ Msps.. the decoders in most DVB cards now a days can handle up to 45Msps QPSK carriers

EDIT: nevermind, it looks to be a type of FEC.. I would have to say that it is not supported by any current commercial device

**ACD** · 09-09-2005 10:45 PM

What is DVB?

**PSB** · 09-09-2005 10:47 PM

Digital Video Broadcasting

**ultatryon** · 09-09-2005 11:17 PM

It is a type of Video compression and encoding based on MPEG2, there are four flavors of DVB, they are DVB-S, DVB-C, DVB-T, and DVB-ASI. they are DVB-Satellite, DVB-Cable, DVB-Terrestral (Over the air), and DVB-Asynchronus Serial Interface (used as backend transport for Digital video in professional equipment), respectively.