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Re: [Discuss-gnuradio] Re: Mode S and ADS-B

From: Eric A. Cottrell
Subject: Re: [Discuss-gnuradio] Re: Mode S and ADS-B
Date: Sun, 15 Apr 2007 15:18:16 -0400
User-agent: Thunderbird (X11/20060911)

Martin Dvh wrote:
> Cory Papenfuss wrote:
>>> I have a digital-wip branche which is work in progress for digital QAM
>>> stuff
>>> and
>>> general-wip which is my work in progress for general gnuradio things
>>> (latest addition is gr-cxadc, a driver for cx2388x capture cards to
>>> use as a general purpose high-speed ADC frontend as a cheap
>>> alternative for
>>> an USRP)
>>> Greetings,
>>> Martin
>>     Has there been some progress on that front then?  I've been lurking
>> here for awhile, but last time I looked into this I don't think the TV
>> -capture cards were viable.  The BT8xx chips still have holes in the
>> data, right?  CX2388x can stream baseband without VBI holes?
> Yes they can.
> Look in the mailinglist for TV card SDR:
> http://lists.gnu.org/archive/html/discuss-gnuradio/2007-04/msg00134.html
> http://lists.gnu.org/archive/html/discuss-gnuradio/2007-04/msg00042.html
> How Chee page on this:
> http://www.geocities.com/how_chee/cx23881fc6.htm
> My page on this:
> http://www.olifantasia.com/projects/gnuradio/mdvh/cx2388x/cxadc/
> SVN files are in
> http://gnuradio.org/trac/browser/gnuradio/branches/developers/nldudok1/general-wip
> cxadc is the kernel driver
> gr-cxadc is the gnuradio driver/glue
> gnuradio-examples/cxadc  are the example scripts

What are the sampling rates for these cards?  Can they go up to 8 or 10
MSPS?  If so I might be able to try them out with Mode S.

73 Eric

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