[Elecraft] Understanding the KX3 Block Diagram

[Matt Maguire]

Here is a presentation by G8VOI which talks about some of the concepts used in radios like the KX3.
http://www.pe0fko.nl/g8voi/SDR_1.pdf

The presentation uses a softrock radio as a concrete example, so where the presentation talks about PCs and soundcards, keep in mind that for the KX3 this corresponds to the A/D & D/A convertors and DSP/microcontroller that are built into the KX3 itself.

73, Matt VK2ACL.


On 08/03/2012, at 2:19 PM, David Stratton wrote:

> Hoping that I may not be the only Ham puzzled by the block diagram of the
> KX3 I am asking that someone please explain it because it is so different
> from the superheterodyne radio concept I have become accustomed to in
> current amateur radios. I understand direct conversion radios but what is
> all the stuff that's there besides the mixer-oscillator and audio amplifier
> needed by a direct conversion radio? It seems to me the KX3 block diagram
> looks a lot like radios put forth some time ago by Rick Campell KK7B. Pardon
> my saying so but the KX3 radio looks like it has a weak front end and a
> heavy back end that hopes to make up for the weak front end!
> 
> Dave - KO4KL
> 
> 
> 
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