Deep Dive: E2A13
The correct answer is B: Store-and-forward. Which of the following techniques is used by digital satellites to relay messages is store-and-forward. Digital satellites use store-and-forward to relay messages. For amateur radio operators, this is important for satellite operation. Understanding this helps when using digital satellites.
Why Other Answers Are Wrong
Option A (Digipeating): Incorrect. Digipeating is used in terrestrial packet radio, not digital satellites - satellites use store-and-forward. Digipeating isn't used. Option C (Multisatellite relaying): Incorrect. Multisatellite relaying isn't the primary technique - store-and-forward is the technique. Multisatellite relaying isn't the answer. Option D (Node hopping): Incorrect. Node hopping is used in mesh networks, not digital satellites - satellites use store-and-forward. Node hopping isn't used.
Exam Tip
Digital satellites relay messages = store-and-forward. Think 'D'igital 'S'atellites = 'D'elay 'S'tore-and-forward. Digital satellites use store-and-forward to relay messages. Not digipeating, not multisatellite relaying, not node hopping - just store-and-forward.
Memory Aid
Digital satellites relay messages = store-and-forward. Think 'D'igital 'S'atellites = 'S'tore-and-forward. Digital satellites use store-and-forward to relay messages. Important for satellite operation.
Real-World Example
Digital satellites relay messages: They use store-and-forward - the satellite receives a message, stores it, and forwards it when the destination is in range. This is different from digipeating (terrestrial packet) or node hopping (mesh networks). Store-and-forward is the technique used by digital satellites to relay messages.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E2A
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 E2A topic.