[Elecraft] K3 DSP processor speed

[jim]

Wayne,

Thanks for the unedited answer with no bias.

Jim
W6AIM


.


-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Wayne
Burdick
Sent: Monday, November 9, 2015 6:46 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] K3 DSP processor speed

The K3's DSP code is written in very efficient assembly language. It
executes quickly, because it doesn't need the lengthy library-routine calls
typical of the C or C++ code written for GHz-clock DSPs. The code is also
extremely compact. 

The crystal oscillator frequency is not a direct indicator of clock speed.
An on-chip PLL multiples it to a much higher frequency. And again, efficient
DSP code written for 48-kHz IF/12-kHz AF sample rates doesn't require a lot
of time to execute.

This same philosophy applies to the K3's microcontroller. One result is that
a K3 draws far less current in receive mode than most desktop transceivers.

The K3's NR has a lot of flexibility (with 32 settings), and some
experimentation is required for best results.

73,
Wayne
N6KR

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