Deep Dive: E2D01
The correct answer is B: MSK144. Which of the following digital modes is designed for meteor scatter communications is MSK144. MSK144 is specifically designed for meteor scatter - very short bursts of communication. For amateur radio operators, this is important for meteor scatter operation. Understanding this helps when operating meteor scatter.
Why Other Answers Are Wrong
Option A (WSPR): Incorrect. WSPR is for weak signal propagation reporting, not meteor scatter - MSK144 is for meteor scatter. WSPR isn't for meteor scatter. Option C (Hellschreiber): Incorrect. Hellschreiber is a facsimile mode, not specifically for meteor scatter - MSK144 is for meteor scatter. Hellschreiber isn't for meteor scatter. Option D (APRS): Incorrect. APRS is for position reporting, not meteor scatter - MSK144 is for meteor scatter. APRS isn't for meteor scatter.
Exam Tip
Meteor scatter digital mode = MSK144. Think 'M'eteor 'S'catter = 'M'SK144. MSK144 is specifically designed for meteor scatter - very short bursts of communication. Not WSPR, not Hellschreiber, not APRS - just MSK144.
Memory Aid
Meteor scatter digital mode = MSK144. Think 'M'eteor 'S'catter = 'M'SK144. MSK144 is specifically designed for meteor scatter - very short bursts of communication. Important for meteor scatter operation.
Real-World Example
Meteor scatter communications: MSK144 is a digital mode specifically designed for meteor scatter. It uses very short transmission bursts (144 milliseconds) optimized for the brief reflections from meteor trails. This is the mode - MSK144 is designed for meteor scatter communications.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E2D
Reference: 2024-2028 Question Pool · E2 - Operating Procedures
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E2D topic.