re:c0de Radio re:c0de · RADIO

Morse code chart

International Morse code (ITU-R M.1677-1). A dot lasts one unit, a dash three; the gap inside a character is one unit, between characters three, between words seven. Reading the chart is easy. Hearing it is the skill, and that is what re:c0de Radio trains.

CharacterPatternCode
0− − − − −-----
1· − − − −.----
2· · − − −..---
3· · · − −...--
4· · · · −....-
5· · · · ·.....
6− · · · ·-....
7− − · · ·--...
8− − − · ·---..
9− − − − ·----.
A· −.-
B− · · ·-...
C− · − ·-.-.
D− · ·-..
E·.
F· · − ·..-.
G− − ·--.
H· · · ·....
I· ·..
J· − − −.---
K− · −-.-
L· − · ·.-..
M− −--
N− ·-.
O− − −---
P· − − ·.--.
Q− − · −--.-
R· − ·.-.
S· · ·...
T-
U· · −..-
V· · · −...-
W· − −.--
X− · · −-..-
Y− · − −-.--
Z− − · ·--..
.· − · − · −.-.-.-
,− − · · − −--..--
?· · − − · ·..--..
/− · · − ·-..-.
=− · · · −-...-
+· − · − ·.-.-.

Prosigns

Prosigns are sent as one fused character, with no gap between letters.

ProsignPatternCode
AR· − · − ·.-.-.
BT− · · · −-...-
SK· · · − · −...-.-
KN− · − − ·-.--.
BK− · · · − · −-...-.-

The Koch learning order

Learning alphabetically is the classic mistake. The Koch method introduces characters at full speed in this order, adding the next only after ~90% accuracy:

K M R S U A P T L O W I . N J E F 0 Y V , G 5 / Q 9 Z H 3 8 B ? 4 2 7 C 1 D 6 X

The first 10 characters are free to master on re:c0de Radio, by ear, in your browser.

Hear your first Morse in 60 seconds, free