What types of amateur stations can automatically retransmit the signals of other amateur stations?
The correct answer is D: Repeater, auxiliary, or space stations. According to FCC Part 97.3, these three types of amateur stations are authorized to automatically retransmit the signals of other amateur stations. Each serves a specific purpose in the amateur radio infrastructure.
Repeater stations automatically receive signals on one frequency and retransmit them on another frequency, extending the range of communications. Auxiliary stations are used to remotely control other stations or link repeaters together. Space stations (amateur satellites) automatically retransmit signals received from Earth stations, allowing long-distance communications via satellite relay. These automatic retransmission capabilities are essential for the amateur radio service's infrastructure, enabling extended range communications and special operations like satellite work.
Exam Tip
Automatic retransmission = Repeater, Auxiliary, Space stations. Remember: These three station types (RAS) can automatically retransmit. Think 'RAS' = Repeater, Auxiliary, Space.
Memory Aid
"**A**utomatic **R**etransmission = **R**epeater, **A**uxiliary, **S**pace (think 'AR = RAS')"
Real-World Application
You're operating through a local 2-meter repeater. When you transmit on 146.160 MHz (the repeater's input frequency), the repeater automatically receives your signal and retransmits it on 146.760 MHz (the output frequency) at higher power. This automatic retransmission extends your communication range from a few miles to potentially 50+ miles, depending on the repeater's location and power.
FCC Part 97.3Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Beacon and Earth stations are not authorized for automatic retransmission. Beacons transmit for propagation study, and Earth stations communicate with space stations but don't automatically retransmit other stations' signals.
Option B: Incorrect. Earth stations are not authorized for automatic retransmission. They communicate with space stations but don't retransmit other amateur stations.
Option C: Incorrect. Beacon stations are not authorized for automatic retransmission. Beacons transmit continuously for propagation observation, not for retransmitting other stations.
题目解析
The correct answer is D: Repeater, auxiliary, or space stations. According to FCC Part 97.3, these three types of amateur stations are authorized to automatically retransmit the signals of other amateur stations. Each serves a specific purpose in the amateur radio infrastructure. Repeater stations automatically receive signals on one frequency and retransmit them on another frequency, extending the range of communications. Auxiliary stations are used to remotely control other stations or link repeaters together. Space stations (amateur satellites) automatically retransmit signals received from Earth stations, allowing long-distance communications via satellite relay. These automatic retransmission capabilities are essential for the amateur radio service's infrastructure, enabling extended range communications and special operations like satellite work.
考试技巧
Automatic retransmission = Repeater, Auxiliary, Space stations. Remember: These three station types (RAS) can automatically retransmit. Think 'RAS' = Repeater, Auxiliary, Space.
记忆口诀
**A**utomatic **R**etransmission = **R**epeater, **A**uxiliary, **S**pace (think 'AR = RAS')
实际应用示例
You're operating through a local 2-meter repeater. When you transmit on 146.160 MHz (the repeater's input frequency), the repeater automatically receives your signal and retransmits it on 146.760 MHz (the output frequency) at higher power. This automatic retransmission extends your communication range from a few miles to potentially 50+ miles, depending on the repeater's location and power.
错误选项分析
Option A: Incorrect. Beacon and Earth stations are not authorized for automatic retransmission. Beacons transmit for propagation study, and Earth stations communicate with space stations but don't automatically retransmit other stations' signals. Option B: Incorrect. Earth stations are not authorized for automatic retransmission. They communicate with space stations but don't retransmit other amateur stations. Option C: Incorrect. Beacon stations are not authorized for automatic retransmission. Beacons transmit continuously for propagation observation, not for retransmitting other stations.
知识点
FCC Part 97.3, Automatic retransmission, Repeater stations, Auxiliary stations, Space stations
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.