Operating Rules and Procedures

Composition of Call Signs

  • A normal amateur radio call sign contains three sections:
    1. one or two characters identifying the nationality of the operator (at least one character will be a letter : letter-number, number-letter or letter-letter combination is possible)
    2. a single digit (i.e. a number)
    3. a group of not more than four characters, the last of which must be a letter
  • There are many exceptions to the above rules (often for special event call signs) however for exam purposes only the above normal rules are relevant
  • Some examples of correct call signs:
    [The dashes (–) in these examples are included simply to highlight the separate call sign sections, they are not part of the call sign]
    • EI–6–XYZ
    • 2E–3–ØRGD
    • M–6–A
  • And some incorrect call signs:
    • 2E–A–BCD  — no number in section ii.
    • EI–4–RGD7  — ends in a number
    • 2–6–A  — no letter in section i.