For the same line with obstructor at the user's terminal the attenuation of carrier signal is weak, when transferring distance is 30km, the applicable frequency range is 0.1~ 200kHz.

  • 当用户处有阻波器时,载波信号衰减很小,在30km范围内可用频段为0.1~200kHz。

  • 互联网摘选 2025-01-20 13:30:19

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