Just wanted to know why 13 was some type of magic number.

Thanks,

--
Ryan, KC8PMX
FF1-FF2-MFR-(pending NREMT-B!)
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Because, for most people, the speed of 13 WPM meant you could ACTUALLY
COPY
Morse Code.

For most folks, up to about 12 WPM you could copy it and NOT actually know
it.

Most countries in the world required 12 WPM. The US Military only wanted
10
Groups per minute. Groups meaning 5 letter 'groups' in a 1 minute period.

That help?

Dan/W4NTI