极高频带 meaning in Chinese

ehf band
extremely high frequency band

Rthk tested dab in l band in 1998 . since then , dab technologies have undergone improvements ; rthks current test of dab vhf band iii is expected to offer a better indoor and outdoor performance . moreover , the price of the receivers has gone down substantially
港台于1998年测试dab时，是以l频带l band进行，这几年来dab技术上有所改进，今次dab测试极高频带vhf band iii ，相信有较佳的室内和室外接收的效果，而接收器的价格也经已回落。