Tayloe Dan-P26412 wrote: > 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.
I believe the present Janus is connected to the SDR-1000 directly with no attenuators of any kind, it's noise floor and dynamic range is better that any reasonable or even expensive sound cards available. -- Cecil KD5NWA www.qrpradio.com www.hpsdr.com "Sacred Cows make the best Hamburger!" Don Seglio Batuna _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz 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
