[CW] WPM

D.J.J. Ring, Jr. djringjr at gmail.com
Sun Jan 9 16:42:56 EST 2011


What is the standard for Words Per Minute in Morse?  PARIS including the
word space, or 25 dots and intercharacter spaces.  The ITU settled on a
number of 50 baud where baud was the fundamental transmission element which
is the shortest time element in the transmission.  This in Morse code is
equal to the length of the dot, and the length of the dot is also equal to
the length of the space between characters, which is called the
"Intercharacter space".  A word space is seven baud.  Since a sent dot
requires a dot space, a string of twenty five dots has twenty five
intercharacter spaces and is equal to 50 baud.

PARIS happened to have 50 code elements in the word.  It also helped that
the organization that did the telegraphic standards was headed at this time
in Paris, France.  The ITU was founded on 17 May 1865 when the first
International Telegraph Convention was signed in Paris by the 20 founding
members, and the International Telegraph Union (ITU) was established.

50 code elements = 50 baud = 25 dots and intercharacter spaces.



73

David J. Ring, Jr., N1EA <http://www.qsl.net/n1ea/>
SOWP <http://www.sowp.org/>, VWOA <http://www.vwoa.org/>,
OOTC<http://www.ootc.us/>,
FISTS <http://www.fists.co.uk/>, CW-Ops <http://www.cwops.org/>,
JARL-A1<http://a1club.net/>,
A1-OP <http://www.arrl.org/a-1-op>, ex-FOC 1271
ARRL-LM<http://www.arrl.org/>Chat Skype:
djringjr MSN: djringjr <djringjr at msn.com>@msn.com <djringjr at msn.com> AIM: N1EA
icq: 27380609

Radio-Officers Google
Group<http://groups.google.com/group/radio-officers?hl=en>-- Marine
Morse Historic Recordings Page <http://www.qsl.net/n1ea/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.qth.net/pipermail/cw/attachments/20110109/ee537601/attachment-0001.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 26274 bytes
Desc: not available
Url : http://mailman.qth.net/pipermail/cw/attachments/20110109/ee537601/attachment-0001.jpe 


More information about the CW mailing list