Thanks for the question and the response.
Ed AI6O
On Mon, Jul 4, 2022 at 8:19 AM Paul O'Kane <pokane@ei5di.com> wrote:
> On 04/07/2022 05:24, AB2E Darrell wrote:
> > Hello all,
> > Can anyone tell me the approximate duty cycle for 30-35wpm CW in a
> contest?
> >
> The duty cycle for CW does not vary with speed.
>
> The standard word PARIS for assessing speed has 50 units, of which 22
> are key down. Therefore, the duty cycle is 44% for an average of 5
> characters per word.
>
> Because some loggers reduce inter-word spacing from 7 to 6 units, the
> duty cycle becomes 22 in 49, which is approximately 45%.
>
> These are worst-case duty-cycle values for contesters, because exchange
> elements (words) are generally shorter than 5 characters. Callsigns
> with 6 or more characters will tend to increase duty cycles, but
> probably never more than 50%.
>
> 73,
> Paul EI5DI
>
>
>
>
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