[Elecraft] KX2 Offset I.F.

[K9MA]

On 12/22/2017 11:37, Don Wilhelm wrote:
> Of course, the KX2 is *not* a superhet, it is a full SDR.  If the "IF" 
> were at a higher frequency, the VFO would be further away from the 
> signal frequency - by the frequency of the IF. 

I must disagree.  All the digital processing takes place after the 
quadrature mixers.  Up to that point, it IS a single conversion 
superhet, but with two mixers with quadrature outputs. The same is true 
of the KX3, though it can be operated as a direct conversion receiver, 
which is simply a superhet with a zero frequency IF.

This is in no way meant to disparage the design of the KX2 or KX3:  They 
are truly excellent radios.

73,

Scott K9MA

-- 
Scott  K9MA

k9ma at sdellington.us