Hello Christophe, Thanks for your very interesting list and underlying links. Only reading about the new (to me) activities will take quite some time! I forwarded your home page to a number of interested ham's in Belgium and The Netherlands; hope this will not 'overload' your server.
73 de ON9CVD, Bob. -----Oorspronkelijk bericht----- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens christophe bourguignat Verzonden: donderdag 4 januari 2007 19:40 Aan: winrad discussion list Onderwerp: Re: [Winrad] Praise & Questions > [EMAIL PROTECTED] wrote: > > > > There are ICs called "digital down converters" > from AD or Intersil... Does anybody have ever tried > to build an IQ-RX with those "guys"? > > Yes, the Analog Device AD6620 is one of them, and it > is used in that variety of SDRs that do A-to-D > conversion directly > at RF, then digitally down convert the numeric > stream to a more manageable (for the PC) sampling > rate. > The RFspace SDR-14 and SDR-IQ use that chip, as it > does the newly announced QS1R by Phil Covington > If interested, I maintain on my site http://f4dan.free.fr/sdr_eng.html an updated and classified list of SDR project. The 3 projects quoted by Alberto are indeed part of the category "sampling by a dedicated RF ADC of a "direct antenna output" RF signal, and ASIC based DDC" DDC function is also sometimes implemented with an FPGA (e.g. : USRP, HPSDR and QS1R that has both FPGA and ASIC based DDC capabilities) Best 73's Christophe F4DAN __________________________________________________ Do You Yahoo!? En finir avec le spam? Yahoo! Mail vous offre la meilleure protection possible contre les messages non sollicités http://mail.yahoo.fr Yahoo! Mail _______________________________________________ Winrad mailing list [email protected] http://winrad.org/mailman/listinfo/winrad_winrad.org -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.4/615 - Release Date: 3-1-2007 13:34 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.5/616 - Release Date: 4-1-2007 13:34 _______________________________________________ Winrad mailing list [email protected] http://winrad.org/mailman/listinfo/winrad_winrad.org
