Which of the following is an application of APRS?
The correct answer is A: Providing real-time tactical digital communications in conjunction with a map showing the locations of stations. An application of APRS is providing real-time tactical digital communications with a map showing station locations. APRS combines position reporting with messaging, allowing operators to see where stations are located on a map while communicating. This is valuable for emergency communications, public service events, and tactical operations where knowing locations is important. For amateur radio operators, APRS provides situational awareness by combining communications with geographic information.
Exam Tip
APRS application = tactical communications with maps. Think 'A'PRS = 'A'llows 'P'osition 'R'eporting with 'S'tation locations on maps. Combines messaging with geographic awareness. Not for PACTOR stats, voice linking, or repeater counts.
Memory Aid
"APRS application = tactical communications with maps. Think 'A'PRS = 'A'llows 'P'osition 'R'eporting with 'S'tation locations. Real-time tactical communications combined with geographic mapping."
Real-World Application
During a public service event, multiple APRS stations report their positions. The APRS map shows all stations' locations in real-time, and operators can send messages to coordinate activities. This provides tactical awareness - you can see where everyone is and communicate accordingly. This combination of mapping and messaging is APRS's key application.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. APRS doesn't show packet transmission statistics for PACTOR - that's a different digital mode. APRS is for position reporting and messaging, not protocol statistics.
Option C: Incorrect. APRS doesn't provide voice over internet for repeaters - that's IRLP or EchoLink. APRS is a data system, not voice.
Option D: Incorrect. APRS doesn't show repeater sign-in counts - that's a repeater function, not an APRS feature. APRS is for position and messaging.
题目解析
The correct answer is A: Providing real-time tactical digital communications in conjunction with a map showing the locations of stations. An application of APRS is providing real-time tactical digital communications with a map showing station locations. APRS combines position reporting with messaging, allowing operators to see where stations are located on a map while communicating. This is valuable for emergency communications, public service events, and tactical operations where knowing locations is important. For amateur radio operators, APRS provides situational awareness by combining communications with geographic information.
考试技巧
APRS application = tactical communications with maps. Think 'A'PRS = 'A'llows 'P'osition 'R'eporting with 'S'tation locations on maps. Combines messaging with geographic awareness. Not for PACTOR stats, voice linking, or repeater counts.
记忆口诀
APRS application = tactical communications with maps. Think 'A'PRS = 'A'llows 'P'osition 'R'eporting with 'S'tation locations. Real-time tactical communications combined with geographic mapping.
实际应用示例
During a public service event, multiple APRS stations report their positions. The APRS map shows all stations' locations in real-time, and operators can send messages to coordinate activities. This provides tactical awareness - you can see where everyone is and communicate accordingly. This combination of mapping and messaging is APRS's key application.
错误选项分析
Option B: Incorrect. APRS doesn't show packet transmission statistics for PACTOR - that's a different digital mode. APRS is for position reporting and messaging, not protocol statistics. Option C: Incorrect. APRS doesn't provide voice over internet for repeaters - that's IRLP or EchoLink. APRS is a data system, not voice. Option D: Incorrect. APRS doesn't show repeater sign-in counts - that's a repeater function, not an APRS feature. APRS is for position and messaging.
知识点
APRS applications, Tactical communications, Position mapping, Emergency communications
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.