I dunno, folks, we may be gilding lilies trying to define SDR. If software handles modulation and demodulation, that's SDR to me. The K3 and KX3 both fit fine.
/Rick On Sun, Dec 23, 2012 at 10:34 AM, John Lawrence <[email protected]> wrote: > > > > Don > > As I'd expect, you did a beautiful job summarizing the difference between > the K3 and KX3 > design architecture. > > I'd call the K3 a hybrid SDR and the KX3 a true SDR? > > What's interesting to me comes from looking at the leap forward in > component technology to make > direct SDR from RF possible. This is the evolution in the chip level > devices it takes to gain this single step conversion > to baseband. Faster and more agile DSP, A/D and D/A etc ICs are at the > heart of the step forward > between the K3 and KX3. > > The companies producing these chips were at my fingertips back in the days > 10 to 20 years ago. Then they were only able > to make it to lower frequency IF stages with costly designs only found in > the top high tech applications such as those found in government > surveillance. > > Back then Burr Brown, Analog Devices, Texas Instruments, Motorola, > Lucent/Bell Labs were working hard with competitive designs. Semiconductor > foundry geometries were heading for half micron on 4" or 6" silicon back > then. > > The software development tools allowing greater coding efficiencies is > another area that has played a major roll to bring us to this point. > > And, his was all done within our free enterprise environment by > private/public capitalized US businesses. > > > > Happy Holidays > > > > > > John, W1QS > > > Waldoboro, Maine > > > > > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- Rick Tavan N6XI Truckee, CA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
