Folks
Sorry to have missed the credits. I went
back to copy them down and had gotten bumped from Teamspeak and it cleared the
messages! I could only remember #6 (smile).
Eric
From:
xylo-sdr-bounces@lists.ae5k.us [mailto:xylo-sdr-bounces@lists.ae5k.us] On Behalf Of KD5NWA
Sent: Saturday, December 17, 2005
11:51 PM
To: Xylo-SDR
Discussion
Subject: 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 ... "