I think WPM would be equal to Dashes Per Second/0.8 rather than /1.2,
since the standard dash to dot ratio is 3:1.
John ND0N
On 09 Jan 2008, at 1746, N4YG wrote:
You will find that there are several methods of specifying CW
speed. I use the definition that you will find in ARRL handbooks,
the current one and those dating back several 10's of years. It is
quite simple
Words Per Minute(WPM) = Dots Per Second / 2.4
This assumes that the duration of dashes is 3 times the duration of
a dot and that the duration of a space is the same as the duration
of a dash.
It follows then that the speed can also be found from the number of
dashes per second
WPM = Dashes Per Second /1.2
So if you want to find the speed, send a string of dashes and count
the number in a 5-second period and divide that number by 6.
Joe, N4YG
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