Administrative Regulations on Radio Waves Article 37

In regard to the transmission of identification signals, the transmission of identification signals must be undertaken at least once every hour and within five minutes before or after each hour. Where the said transmission results in an unreasonable interruption of communications, it shall be undertaken at the beginning and at the end of the transmission.The transmission rules as prescribed in the preceding Paragraph shall be applied mutatis mutandis to the test, adjustment or experiment.
中文原文 電波監理業務管理辦法第37條
發射識別信號時,每小時至少應發射識別信號一次,並於每小時前後五分鐘內為之。
發射識別信號造成通信不合理中斷時,得於發射開始與終了為之。
前項發射規定,測試、調整或實驗,亦同。

English translation for reference only; the Chinese text prevails. Not legal advice.