Deep Dive: E1F04
The correct answer is A: A line roughly parallel to and south of the border between the US and Canada. Which of the following geographic descriptions approximately describes 'Line A' is a line roughly parallel to and south of the border between the US and Canada. Line A is a geographic boundary used for frequency restrictions. For amateur radio operators, this is important for understanding frequency restrictions. Understanding this helps ensure legal operation.
Why Other Answers Are Wrong
Option B: Incorrect. Line roughly parallel to and west of US Atlantic coastline isn't Line A - Line A is related to US-Canada border, not Atlantic coast. Atlantic coast is wrong. Option C: Incorrect. Line roughly parallel to and north of US-Mexico border isn't Line A - Line A is related to US-Canada border, not Mexico border. Mexico border is wrong. Option D: Incorrect. Line roughly parallel to and east of US Pacific coastline isn't Line A - Line A is related to US-Canada border, not Pacific coast. Pacific coast is wrong.
Exam Tip
Line A = line roughly parallel to and south of US-Canada border. Think 'L'ine 'A' = 'L'ooks 'A'long US-'C'anada border, 'S'outh. Line A is a geographic boundary roughly parallel to and south of the US-Canada border. Not Atlantic coast, not Mexico border, not Pacific coast - just south of US-Canada border.
Memory Aid
Line A = line roughly parallel to and south of US-Canada border. Think 'L'ine 'A' = 'S'outh of 'C'anada border. Line A is a geographic boundary roughly parallel to and south of the US-Canada border. Important for understanding frequency restrictions.
Real-World Example
Line A: It's a geographic line roughly parallel to and south of the border between the US and Canada. This line is used to define frequency restrictions - stations north of Line A have different restrictions than stations south of Line A. This is what Line A is - a line south of the US-Canada border.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E1F
Reference: FCC Part 97.303
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E1F topic.