It would sure be great as an initial start to simply provide this portion of the project as a gang busters audio card though. I for one am disappointed with the current state of the art in sound cards such as my Firebox. It requires entirely too much gain to get the best sensitivity out of the thing, probably because of attenuators on the line inputs. It would be really, really nice to have the sound card inputs optimized for SDR use.
Between the 10 db improved A/D noise floor and a non-attenuated line input, I could probably see another 15 db of blocking range out of a 5v SDR pre-amp compared to what I have now. That would allow a lot more freedom in the blocking vs. sensitivity SDR trade space. - Dan, N7VE -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Cecilio Bayona Sent: Tuesday, September 26, 2006 10:09 AM To: FlexRadio Subject: Re: [Flexradio] USB Interface on the Horizon? Ken - N9VV wrote: > There are, of course, many 12VDC computer systems on the market. They > are especially popular with the "Car computer for gaming" crowd. May I > suggest these resources for info: > > Embedded computer examples (pictures) > http://www.linuxdevices.com/articles/AT8498487406.html > http://www.linuxdevices.com/articles/AT9547755813.html > > 12VDC computers in all sizes > http://www.logicsupply.com/index.php/cPath/50 > http://www.mini-box.com/s.nl/sc.8/category.94/.f > --------------------------------------------------------------------- > The HPSDR group already has a full USB interface figured out and coded > by Bill KD5TFD for the PowerSDR software. At first Phil VK6APH and > Bill used the Xylo USB interface, but now I believe it is fully > implemented on the Ozymandias board (http://hpsdr.org/ozy.html) on the > Atlas backplane in an FPGA. > > de ken n9vv > > It must be noted that it's not just another audio card, the specs on it beats the pants off anything out there that is affordable. It's way better than a Delta-44 or any of the Firewire cards now supported. -- Cecil KD5NWA www.qrpradio.com www.hpsdr.com "Sacred Cows make the best Hamburger!" Don Seglio Batuna _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com _______________________________________________ FlexRadio mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
