Administrative Regulations on Radio Waves Article 43
Where a land station uses more than two radio frequencies, each frequency may use its respective identification signal.
中文原文 電波監理業務管理辦法第43條
陸地電臺使用二個以上無線電頻率時，每一頻率得使用個別識別信號。
English translation for reference only; the Chinese text prevails. Not legal advice.