Deep Dive: T8C05
The correct answer is A: A letter-number designator assigned to a geographic location. A grid locator (also called Maidenhead grid square) is a letter-number designator assigned to a geographic location. Grid locators divide the world into squares, with each square identified by a 4-6 character code (like EM48 or FN20ab). The first two characters identify a large area, the next two identify a smaller square, and optional additional characters provide even finer resolution. For amateur radio operators, grid locators are used in contests, awards, and for identifying station location. They're more precise than just stating a state or country.
Why Other Answers Are Wrong
Option B: Incorrect. Grid locators identify geographic location (latitude/longitude), not azimuth and elevation. Azimuth and elevation are antenna pointing angles, not location identifiers. Option C: Incorrect. Grid locators aren't instruments for neutralizing amplifiers - that's not related to grid locators at all. Grid locators are location codes. Option D: Incorrect. Grid locators aren't instruments for direction finding - they're location identifiers, not measurement tools.
Exam Tip
Grid locator = geographic location code. Think 'G'rid 'L'ocator = 'G'eographic 'L'ocation. A letter-number code that identifies your location on Earth. Not about azimuth/elevation, amplifiers, or direction finding.
Memory Aid
Grid locator = geographic location code. Think 'G'rid 'L'ocator = 'G'eographic 'L'ocation. Letter-number code identifying your location on Earth. Used in contests and for location identification.
Real-World Example
Your station is located in New York City. Your grid locator is FN30. This 4-character code precisely identifies your geographic location. In contests, you exchange your grid locator instead of just saying 'New York' - it's more precise and allows for awards based on working stations in different grid squares. Grid locators are the standard way to identify location in amateur radio.
Source & Coverage
Question Pool: 2022-2026 Question Pool
Subelement: T8C
Reference: 2022-2026 Question Pool · T8 - Signals and emissions
Key Concepts
Verified Content
Question from the official FCC Technician Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the T8C topic.