http://elecraft.85.s1.nabble.com/KX2-versus-K3-Keyer-Speed-tp7633240p7633271.html
Thanks for the comments below. I actually thought of putting this on my oscilloscope to measure the actual timing but I was just too lazy. Another idea I had which I may still do is to record a string of dots from the KX2 and the K3 and then use signal processing to measure the timing between dots. I figure I can use Mathematica (Wolfram) for this. This is what I might do when I get an afternoon free to do it — maybe in the dead of winter.
> On Aug 11, 2017, at 11:22 AM, John Oppenheimer <
[hidden email]> wrote:
>
> Hi Phil,
>
> Yes there is a little difference.
>
> One standard for WPM can be found in:
>
https://en.wikipedia.org/wiki/Morse_code> as T = 1200 / W or WPM = 1200 / T
> Where T is dot duration in mS.
>
> To remove weighting, using an oscilloscope to measure Dot and Space
> time. The keyer is using the micro-controller, which is doing other
> things, therefore there is a little jitter. To filter jitter out,
> oscilloscope averaging is enabled.
>
> K3 116.0 mS (Dot+Space) = 20.7 WPM
> KX2 114.8 mS (Dot+Space) = 20.9 WPM
>
> John KN5L
>
>
> On 08/11/2017 09:54 AM, Phil Hystad wrote:
>> I think I have detected a subtle difference between the keyer speed of my KX2 and my K3. Is this possible? How far off? About one word per minute I think. The KX2 being faster that is. Thus, I run my K3 at 20 wpm as my normal speed and my KX2 at 19 wpm to obtain the same feel. Defininately not large enough to be a bother, I am mostly just curious as to whether this is true.
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