According to Wayne, Rx performance will be similar to that of the Flex-3000. With the KX3's QSD down-convert architecture, my guess is that all performance parameters will be superb, with BDR specs probably well behind the K3. I'm basing my opinion only on the little information available. Who knows what other magic they developed to close the gap in performance. It's hard to believe that such performance is attainable in a low-current design. Take a look at Dan Tayloe's Norcal 2030. It's nearly a miracle that he attained such high performance in a quadrature detector design and yet the Rx current is less than 12 mA.
The KX3 effectively combines the best performance and portability attributes of the Flex-3000 and Flex-1500 into a highly modular package. Once available, I can't imagine anything better for a DXpedition. For contesting, FD , etc., the K3 would still surpass it. I really like the KX3 panel design. I'm still hoping that the next major Elecraft transceiver continues with modular architecture to allow for a choice in remote control panels between portable and base station sizes. There's no longer a need to bind the hardware to the control surface. Paul, W9AC Original Message ----- From: "Rick Prather" <k6limae...@gmail.com> To: "Bruce Beford" <bruce.bef...@myfairpoint.net> Cc: <elecraft@mailman.qth.net> Sent: Saturday, May 21, 2011 11:06 AM Subject: Re: [Elecraft] KX3 Baseband filter? > Thank you Bruce, > > I was also puzzled by that part of the presentation. > > Rick > K6LE > > On 5/21/2011, at 8:01 , Bruce Beford wrote: > >> "Baseband" refers to the fact that the QSD down-converts the RF to IQ >> streams at directly near-audio range frequencies. The ADC converts this >> to >> digital, and the DSP then does the demodulation. From the description, >> the >> "IF" frequencies are in the 10 KHz range. So, the "baseband roofing" >> filter >> will be a selectable active "audio" filter operating in this range, prior >> to >> the ADC. This will prevent excessive "out of band" energy from reaching >> the >> ADC. >> >> Bruce, N1RX >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
