Which of the following is a method for establishing EME contacts?
The correct answer is A: Time-synchronous transmissions alternating between stations. Which of the following is a method for establishing EME contacts is time-synchronous transmissions alternating between stations. EME contacts use time-synchronized alternating transmissions. For amateur radio operators, this is important for EME operation. Understanding this helps when operating EME.
Exam Tip
EME contact method = time-synchronous transmissions alternating between stations. Think 'E'ME = 'E'xchange 'M'essages 'E'xactly timed. EME contacts use time-synchronized alternating transmissions. Not store-and-forward, not beacon monitoring, not high-speed CW - just time-synchronous alternating.
Memory Aid
"EME contact method = time-synchronous transmissions alternating between stations. Think 'E'ME = 'T'ime-'S'ynchronous. EME contacts use time-synchronized alternating transmissions. Important for EME operation."
Real-World Application
Establishing EME contacts: Stations use time-synchronous transmissions alternating between stations. For example, Station A transmits for 1 minute, then Station B transmits for 1 minute, synchronized to the same time reference. This allows both stations to receive during their receive periods. This is the method - time-synchronous alternating transmissions.
Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. Storing and forwarding digital messages isn't EME - EME uses time-synchronous alternating transmissions. Store-and-forward isn't EME.
Option C: Incorrect. Judging optimum transmission times by monitoring beacons isn't the method - EME uses time-synchronous alternating transmissions. Beacon monitoring isn't the method.
Option D: Incorrect. High-speed CW identification to avoid fading isn't the method - EME uses time-synchronous alternating transmissions. High-speed CW isn't the method.
题目解析
The correct answer is A: Time-synchronous transmissions alternating between stations. Which of the following is a method for establishing EME contacts is time-synchronous transmissions alternating between stations. EME contacts use time-synchronized alternating transmissions. For amateur radio operators, this is important for EME operation. Understanding this helps when operating EME.
考试技巧
EME contact method = time-synchronous transmissions alternating between stations. Think 'E'ME = 'E'xchange 'M'essages 'E'xactly timed. EME contacts use time-synchronized alternating transmissions. Not store-and-forward, not beacon monitoring, not high-speed CW - just time-synchronous alternating.
记忆口诀
EME contact method = time-synchronous transmissions alternating between stations. Think 'E'ME = 'T'ime-'S'ynchronous. EME contacts use time-synchronized alternating transmissions. Important for EME operation.
实际应用示例
Establishing EME contacts: Stations use time-synchronous transmissions alternating between stations. For example, Station A transmits for 1 minute, then Station B transmits for 1 minute, synchronized to the same time reference. This allows both stations to receive during their receive periods. This is the method - time-synchronous alternating transmissions.
错误选项分析
Option B: Incorrect. Storing and forwarding digital messages isn't EME - EME uses time-synchronous alternating transmissions. Store-and-forward isn't EME. Option C: Incorrect. Judging optimum transmission times by monitoring beacons isn't the method - EME uses time-synchronous alternating transmissions. Beacon monitoring isn't the method. Option D: Incorrect. High-speed CW identification to avoid fading isn't the method - EME uses time-synchronous alternating transmissions. High-speed CW isn't the method.
知识点
EME contacts, Time-synchronous transmissions, Alternating between stations, EME operation
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.