Administrative Regulations of Amateur Radio Operators and Radio Stations Article 45

Prior to the implementation of these regulations, those that have obtained an amateur radio license in accordance with Administrative Regulations on Amateur Radio authorized by the Telecommunications Law, and need to continue to operate the radio station after the expiration of the amateur radio station license, shall within five months from six months prior the expiration of the radio license, in accordance with the provisions of Article 20, apply to the competent authority for renewal.
中文原文 業餘無線電人員及電臺管理辦法第45條
本法施行前依電信法授權訂定之業餘無線電管理辦法取得業餘電臺執照,且於電臺執照之有效期限屆滿後仍需繼續使用電臺者,應於電臺執照有效期間屆滿前六個月起五個月內,依第二十條規定向主管機關申請換發電臺執照。

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