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Question 110

Which of the following is a method for establishing EME contacts?

  1. Time-synchronous transmissions alternating between stationsCorrect answer
  2. Storing and forwarding digital messages
  3. Judging optimum transmission times by monitoring beacons reflected from the moon
  4. High-speed CW identification to avoid fading

Explanation

EME stations transmit in alternating timed periods keyed to UTC, one station in the first period and the other in the second, so each knows exactly when to listen and decoding software knows where the transmission starts. There are no moon-reflected beacons to monitor, and store-and-forward has nothing to do with moonbounce.

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Question 110: Which of the following is a method for establishing EME… · FCC Amateur Extra Class (Element 4) · Questena