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## Re: Dit speed to WPM?

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• While we re on captivating subjects, does anyone know how many pieces of lint makes a bellbutton full? 73, Milt k4oso ... consists of 50 basic units of time
Message 1 of 11 , Dec 7, 2006
While we're on captivating subjects, does anyone know how many pieces
of lint makes a bellbutton full?
73, Milt k4oso

--- In cw_bugs@yahoogroups.com, "David J. Ring, Jr." <n1ea@...> wrote:
>
> By defination a "word" in Morse Code is the 50 baud PARIS. PARIS
consists of 50 basic units of time (dots) so it is 50 baud.
>
> 60 wpm would be PARIS sent 60 times in one minute.
>
> Thus one PARIS (50 baud) in one second would be sent.
>
> Each dot is 1/50 of a second since 50 baud is sent in one second,
then the basic element of the baud is the dot, and it takes 1/50th of
a second at 60 wpm.
>
> Thus at 30 wpm the dot takes 2/50th of a second of 1/25 of a second.
>
> 10 wpm would be 3/25 of a second dots.
>
> The reason that American Morse is faster than International Morse
is because of the "dotty" letters allow it to have more and fast
characters than International Morse.
>
> E
> I
> S
> H
> T
> M = all remain the same - fast letters.
> O is faster ee
> C is faster ee e
> R is faster e ee
> Y is faster ee ee
> L is faster daaaah
>
> You could calculate this by taking the "most common letters in
newsprint (messages)" and compare the baud count in both American
Morse and International Morse.
>
> I believe according to my memory when I did this it figured out to
about 25% faster for American.
>
> But American Morse would also be faster than International for CODE
GROUPS because of the introduction of "dotty" characters.
>
> In International Morse, code groups sent at 20 gpm (groups per
minute) equal the "transmission speed" of English sent at 25 wpm
(words per minute) - words and groups both being counted as "5"
characters.
>
> Also in the old estimation of code speed by American Morse
operators, the speed is calculated as "expanded words" from Phillips
Code at the ear, to English at the typewriter.
>
> In any event, the limiting factor is the typewriter!
>
> 73
>
> DR
> ----- Original Message -----
> From: Donald Kemp
> To: cw_bugs@yahoogroups.com
> Sent: Friday, December 01, 2006 6:31 PM
> Subject: Re: [cw_bugs] Dit speed to WPM?
>
>
> Earl,
>
> Let me try to figure this out.
> If I send PARIS in one minute that's 1 WPM.
> P = 2 dits and 2 dahs. 1 dah = 3 dits x 2 = 6 + 2 = 8 + 3 spaces
between
> elements & + 1 space between character = 12 dits
> A = 1 dit and 1 dah. Thats 1 + 3 + 1 element space + 1 character
space = 6
> dits
> R = 2 dits and 1 dah. 5 = 2 element spaces + 1 character space =
8 dits
> I = 2 dits + 1 element space + 1 character space = 4 dits
> S = 3 dits + 2 element spaces = 5 dits.
>
> Total dits = 12 + 6 + 8 + 4 + 5 = 35 dits in one minute or 60/35 =
> 1.7142857seconds/dit
> Space between words = 1 dah = 3 dits.
> 20 WPM would be 60/(20 x 35) + (19 x 3) = 757. 60/757 = .07926
seconds/dit.
> 1/.07926 = 12.617 dits/second = 20 WPM.
>
> Maybe.
>
> I may be missing something in the spaces between words. Do I
actually count
> them for the dit count?
> If not it would be:
> 20 WPM = 60/(20 x 35) = .0857 sec/dit.
> 1/.0857 = 11.668 dits/sec = 20 WPM
>
> Not too much difference.
>
> So for any other WPM calculation (using the second formula) it
would be:
> X WPM = 60/(X x 35) = Y sec/dit
> 1/Y = Z dits/sec.
>
> IE for 15 WPM.
>
> 15 WPM = 60/(15 x 35) = .1142857 sec/dit
> 1/.1142857 = 8.75 dits/sec.
>
> Hopefully there's already a table somewhere that will let me know
if I'm all
> wet.
>
> It was fun anyway Earl.
>
> 73,
>
> Don, NN8B
> SKCC 36
>
> On 12/1/06, Earl Needham <needhame1@...> wrote:
> >
> >
> > Is there a general rule of thumb, that so many dits per
> > second equals so many WPM? It would make it a lot easier to
figure
> > how fast somebody was sending, how fast a bug is, etc. -- a LOT
> > easier than sending PARIS repeatedly! :-)
> >
> > Thanks,
> > Earl
> >
> > KD5XB
> > Clovis, New Mexico DM84jk
> > http://groups.yahoo.com/group/cw_bugs
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
>
>
>
>
>
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>
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>
• By the way, a bellbutton is the same as a bellybutton :-) Milt k4oso
Message 2 of 11 , Dec 7, 2006
By the way, a "bellbutton" is the same as a "bellybutton":-)
Milt k4oso
• ... Gee, now you got me wondering if this same comparison translates over to bell bottoms... Earl KD5XB Clovis, New Mexico DM84jk
Message 3 of 11 , Dec 7, 2006
At 11:53 AM 12/7/2006, k4oso wrote:
>By the way, a "bellbutton" is the same as a "bellybutton":-)
>Milt k4oso

Gee, now you got me wondering if this same comparison
translates over to bell bottoms...

Earl

KD5XB
Clovis, New Mexico DM84jk
http://groups.yahoo.com/group/cw_bugs
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