Het door RDI voorgeschreven spelalfabet en veel foutief gebruikte spelalfabetten.
| Letter | voorgeschreven (NATO) | alternatief 1 | alternatief 2 |
|---|---|---|---|
| A | Alfa | America | Atlantic |
| B | Bravo | Baltimore | Baker |
| C | Charlie | Canada | Casablanca |
| D | Delta | Danmark | Doggy |
| E | Echo | Equador | Edison |
| F | Foxtrot | Florida | Fox |
| G | Golf | Germany | Geneva |
| H | Hotel | Honolulu / Hawaii | Henri / Havanna |
| I | India | Italy | |
| J | Juliet | Japan | |
| K | Kilo | Kilowatt | Kentucky |
| L | Lima | London | Luxemburg |
| M | Mike | Mexico | Madagascar |
| N | November | Nancy | Nicaragua |
| O | Oscar | Ocean | Ontario |
| P | Papa | Pacific | Portugal |
| Q | Quebeq | Queen | |
| R | Romeo | Radio | Romenia |
| S | Sierra | Sugar / Sweden | Santiago |
| T | Tango | Tripoli | Texas |
| U | Uniform | Uppsala | United / Uruguay |
| V | Victor | Valencia | Venezuela / Victoria |
| W | Whiskey | Washington | |
| X | X-ray | Xantippe | |
| Y | Yankee | Yokahama | |
| Z | Zulu | Zanzibar | Zurich |