Last Updated
：2025/11/28
maximum usable frequency
（ plural ）
Quizzes for review
(radio) The highest frequency that allows radio waves to be reflected off the ionosphere.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
maximum usable frequency
During the contest, the ham operator checked the maximum usable frequency before transmitting to ensure his signal would reach across the ocean.
See correct answer
During the contest, the ham operator checked the maximum usable frequency before transmitting to ensure his signal would reach across the ocean.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
