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Baudot / ITA2 Code
International Telegraph Alphabet No. 2 (ITA2) five-bit code reference with separate LETTERS and FIGURES shift states.
| 5-bit (MSB → LSB) | LETTERS state | FIGURES state |
|---|---|---|
00000 | NUL | NUL |
00001 | E | 3 |
00010 | LF | LF |
00011 | A | - |
00100 | Space | Space |
00101 | S | ' |
00110 | I | 8 |
00111 | U | 7 |
01000 | CR | CR |
01001 | D | WRU |
01010 | R | 4 |
01011 | J | BELL |
01100 | N | , |
01101 | F | national/private |
01110 | C | : |
01111 | K | ( |
10000 | T | 5 |
10001 | Z | + |
10010 | L | ) |
10011 | W | 2 |
10100 | H | national/private |
10101 | Y | 6 |
10110 | P | 0 |
10111 | Q | 1 |
11000 | O | 9 |
11001 | B | ? |
11010 | G | national/private |
11011 | FIGS | FIGS |
11100 | M | . |
11101 | X | / |
11110 | V | = |
11111 | LTRS | LTRS |
Displayed as bit positions 5 4 3 2 1 (most significant first). ITA2 transmits bit 1 first. 11111 = LETTERS shift, 11011 = FIGURES shift. The FIGURES positions for F/H/G are national/private and are not identical across all variants.
Geocaching tip: Unlike ASCII, ITA2 uses only five data bits plus a persistent letters/figures state.
Reference conventions: ITU-T S.1 International Telegraph Alphabet No. 2