Updated: Dec 9, 2025 | Source: 2024-2028 Question Pool | Topic: E3B
E3B02E3B

What is the approximate maximum range for signals using transequatorial propagation?

Deep Dive: E3B02

The correct answer is C: 5,000 miles. What is the approximate maximum range for signals using transequatorial propagation is 5,000 miles. TEP can extend signals up to about 5,000 miles. For amateur radio operators, this is important for TEP operation. Understanding this helps when operating TEP.

Why Other Answers Are Wrong

Option A (1,000 miles): Incorrect. 1,000 miles is too short - TEP can extend up to about 5,000 miles. 1,000 miles is too short. Option B (2,500 miles): Incorrect. 2,500 miles is too short - TEP can extend up to about 5,000 miles. 2,500 miles is too short. Option D (7,500 miles): Incorrect. 7,500 miles is too long - TEP maximum is about 5,000 miles. 7,500 miles is too long.

Exam Tip

TEP maximum range = 5,000 miles. Think 'T'EP 'M'aximum = '5',000 miles. TEP can extend signals up to about 5,000 miles. Not 1,000, not 2,500, not 7,500 - just 5,000 miles.

Memory Aid

TEP maximum range = 5,000 miles. Think 'T'EP 'M'aximum = '5',000 miles. TEP can extend signals up to about 5,000 miles. Important for TEP operation.

Real-World Example

Transequatorial propagation: The approximate maximum range is 5,000 miles. TEP can extend signals well beyond normal ionospheric skip distances, but typically not beyond 5,000 miles. This is the maximum range - 5,000 miles for TEP.

Source & Coverage

Question Pool: 2024-2028 Question Pool

Subelement: E3B

Reference: 2024-2028 Question Pool · E3 - Radio Wave Propagation

Key Concepts

Transequatorial propagation Maximum range 5,000 miles TEP range

Verified Content

Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E3B topic.