Generally less than 20 kHz frequency called Distribution Line Carrier [DLC] and the non-use permit is to allow, on the basis of non-interference in each other.

 
  • 通常频率少于 20 仟赫被称为分配线运送者 [DLC] 和使用是允许在一之上非得到许可的, 非冲突基础。
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