[Copied from rec.ham-radio on Usenet]

I am just starting to learn Morse code.  I created the chart below to help
me visualize how the characters are related.  It is a binary tree with
each branch indicating either "." or "-".  You can use it to translate
Morse code to clear text as each "bit" (either "." or "-") is transmitted,
rather than accumulating the whole character and then searching for a match.
I feel that this is going to be a very natural way for me to memorize Morse.

Here's an example:
To find the clear text for "-.-.", start at the right branch (T) because
the first symbol is a "-".  The next symbol is a ".", so travel down to
the left (N).  The next symbol is a "-", so travel down to the right (K).
The next symbol is a ".", so travel down to the left (C).  Since there
are no more symbols left, "C" is the clear text for "-.-.".
A percent symbol ("%") is used to indicate that no character exists for
the corresponding Morse (eg "..--").  It is only used when an existing
character is built up from said non-existing character (eg "..---").

Remember: if the symbol is ".", go left; if it is "-", go right.

If you find the chart a little hard to read on the screen, I suggest printing
it out in a monospace (ie non-proportional) font.
	==Adam

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