Title: Differentiate between discrete and nondiscrete beacon codes.
Course: Air Traffic Controller (20999) > Section: Understanding Theory and Fundamentals of Radar Operation and Procedures

Differentiation should include the following concepts:

- Discrete is a code that is assigned to only one aircraft within a particular area of airspace. The discrete beacon codes do not end in the numerals “00” (e.g., 0101, 5520, and 6421).
- Nondiscrete is a code that may be assigned, concurrently, to more than one aircraft within a particular airspace. The nondiscrete beacon codes end in the numerals “00” (e.g., 0100, 1200).

Process/Skill Questions:

- Which type of beacon codes end in the numerals “00”?
- Which type of beacon codes can be assigned to only one aircraft within a particular area of airspace?