Re: [Discuss-gnuradio] Questions on US digital cable ...

2008-04-13 Thread Vijay Ramasami
Jan, Sorry. I have been out of touch with GNURadio for a while. I am very happy to hear that you have some data available to test. I would really appreciate it if you can find time to upload your data (whatever size you are comfortable with - I have a fast connection and hence 270MB should downloa

Re: [Discuss-gnuradio] Questions on US digital cable ...

2007-09-21 Thread Jan Schiefer
Vijay Ramasami wrote: On 8/17/07, Jan Schiefer <[EMAIL PROTECTED]> wrote: Vijay Ramasami wrote: Thanks for the information David. I will look up ITU-J.83B ... Do you happen to have any captured QAM cable data (or any website that lists the data) ? I wanted to see if I can put together

Re: [Discuss-gnuradio] Questions on US digital cable ...

2007-08-20 Thread Jan Schiefer
Vijay, I would highly appreciate it if you can capture a few QAM-64 snapshots. I was able to successfully demodulate signals captured from a QAM modulator, but I don't have access to a real-world cable source. I guess the python script "usrp_rx_cfile.py" (in the examples directory) can be used to

Re: [Discuss-gnuradio] Questions on US digital cable ...

2007-08-18 Thread Vijay Ramasami
On 8/17/07, Jan Schiefer <[EMAIL PROTECTED]> wrote: > Vijay Ramasami wrote: > > Thanks for the information David. I will look up ITU-J.83B ... > > > > Do you happen to have any captured QAM cable data (or any website that > > lists the data) ? I wanted to see if I can put together a software > > de

Re: [Discuss-gnuradio] Questions on US digital cable ...

2007-08-17 Thread Matt Ettus
> If you can't find any, let me know and I might be able to help. I > have access to 2 QAM-64 channels and 15 or so QAM256 channels, some > HD, all unencrypted. I probably have some encrypted ones too, but I > don't know how many, as they are encrypted... If you can write a > little capture pr

Re: [Discuss-gnuradio] Questions on US digital cable ...

2007-08-17 Thread Jan Schiefer
Vijay Ramasami wrote: Thanks for the information David. I will look up ITU-J.83B ... Do you happen to have any captured QAM cable data (or any website that lists the data) ? I wanted to see if I can put together a software demod for digital cable ... On 8/13/07, David I. Emery <[EMAIL PROTECTED

Re: [Discuss-gnuradio] Questions on US digital cable ...

2007-08-15 Thread David I. Emery
On Tue, Aug 14, 2007 at 10:55:40AM -0400, Vijay Ramasami wrote: > Thanks for the information David. I will look up ITU-J.83B ... > > Do you happen to have any captured QAM cable data (or any website that > lists the data) ? I wanted to see if I can put together a software > demod for digital cable

Re: [Discuss-gnuradio] Questions on US digital cable ...

2007-08-14 Thread Vijay Ramasami
Thanks for the information David. I will look up ITU-J.83B ... Do you happen to have any captured QAM cable data (or any website that lists the data) ? I wanted to see if I can put together a software demod for digital cable ... On 8/13/07, David I. Emery <[EMAIL PROTECTED]> wrote: > On Mon, Aug

Re: [Discuss-gnuradio] Questions on US digital cable ...

2007-08-13 Thread David I. Emery
On Mon, Aug 13, 2007 at 10:52:54AM -0400, Vijay Ramasami wrote: > Hi, > > I have a couple of questions: > > 1. Does the US digital cable system follow the DVB-C standard (or one > of its annexes) ? Is there any information (website) on the typical > symbol rates, bandwidths (I am guessing approx

[Discuss-gnuradio] Questions on US digital cable ...

2007-08-13 Thread Vijay Ramasami
Hi, I have a couple of questions: 1. Does the US digital cable system follow the DVB-C standard (or one of its annexes) ? Is there any information (website) on the typical symbol rates, bandwidths (I am guessing approx 6 MHz), used ? 2. Has anyone successfully captured (preferably unencrypted) d