At 02:31 11/01/01 -0000, WD4KPD wrote:
good day all....anyone know how dot length translates to WPM ?
i have seen some QRSS speeds listed in WPM on the net especially concerning
lowfer/medfer beacons in USA.
WPM (Words Per Minute) is based on the 'PARIS' system, where PARIS is taken
as a standard word that has a length of exactly 50 dots (including word
spacing).
As a result 1 WPM = 50 dots per minute , 12 WPM = 600 dots per minute and
so on ...
Or the other way arround at 1 WPM a dot takes 60/50 = 1.2 seconds, at 12
WPM a dot is 0.1 second long.
So : dot length (seconds) = 1.2/WPM
73, Rik ON7YD
| 