Re: KX2/3 DSP AM Demodulation

Posted by k6dgw on Sep 10, 2017; 2:35am
URL: http://elecraft.85.s1.nabble.com/KX2-3-DSP-AM-Demodulation-tp7634311p7634313.html

A superhet converts the signal to an intermediate frequency [455 KHz?]. 
Sometimes it does it more than once, 2 or more IF's, many today have a
very high frequency first IF [70+ Mhz].

  A DC receiver converts the signal once to audio.  Regardless of the
mechanics [which these days can get very complex], that's really all
there is.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 9/9/2017 7:19 PM, K9MA wrote:

> It's been a long time since I studied signal theory in college, but
> I'm curious as to how AM is demodulated in a direct conversion radio
> like the KX2/3.  (SSB and CW demodulation I understand.) Does anyone
> know, or have a reference?
>
>
> 73,
>
> Scott K9MA
>

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