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Re: [Xylo-SDR] First Xylo Teamspeak Forum
Correction, Bill came up with 1 through 5, I threw in six.
Very important, the "Fun :-P Factor"
At 09:35 PM 12/17/2005, you wrote:
Folks
Had a good group
discussing the Xylo-sdr project this afternoon at 17:00 utc.
Several interest areas
were discussed including accurate and precise LO correction (or
equivalent) and A/D conversion for managing audio digitizing to the radio
or for that matter any audio processing role.
Bill KD5TFD again asked
the question, basically "Are we wasting our time". We do have
some really good commercial sound card choices at the moment both USB and
PCI. They really do work well.
Cecil responded with
about 6 reasons why we aren't wasting our time. # six is "Because
it's fun".
If we have the mix of
folks within the Xylo group forum to get to an FPGA based, multipurpose
end product at a reasonable $ cost then it is not a waste of time, and I
think it will be fun. Phil mentions that we should not cut corners in
design, and I am in total agreement. It should be as good or better than
the best sound card out there and we control the design, so we can
customize what we want.
A good starting point,
since it is the most discussed, and has immediate application is
designing a board with an A/D converter, and audio codec to do the
receive audio digitization realizing the published specs, and the
transmit side audio.
The TI chips mentioned
by Phil Covington at the moment are the best choice, however Bob - N4HY
suggests we not be closed minded, and take another look at potential
candidates. So be it. Phil Covington has done quite a bit of study and
came up with the TI combo. Before we put pencil to paper and design to
copper, let's take another week's look at what is out there.
This is a volunteer
effort with a lot of qualified people participating. It is not a race to
go to market, however to be useful it really needs to be a product.
Probably needs to have a target price in the neighborhood of a good sound
card, yet have many other features added as modules (Radio control, whole
radio in the project, precise-accurate frequency standard etc.
http://flex-radio-friends.net/AVI/tsforums/xyloaudio12-17-05.mp3
Looking forward to more
discussions and fun watching it evolve.
Eric - AA4SW
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Cecil Bayona
KD5NWA
www.qrpradio.com
"I fail to see why doing the same thing over and over and
getting the same results every time is insanity: I've almost proved it
isn't; only a few more tests now and I'm sure results will differ this
time ... "