Complex sentence: On February 14,2012, the delegates at WRC-12 formally approved allocating 472-479 kHz to the amateur radio service; however, this allocation will not go into effect until it is entered into the ITU's Radio Regulations.
Split into simpler sentences: On February 14,2012, the delegates at WRC-12 formally approved allocating 472-479 kHz to the amateur radio service. However this new allocation will not take effect until it is entered into the ITU's Radio Regulations.