VHF通信系统：有效作用距离35海里，具有多频道录音功能。
VHF Communication System: Effective range of 35 miles with multi-channel recording function.
随着多频道共用移动电话系统的出现，互调干扰将日趋严重，以致使在一定范围内严重影响通信。
With the advent of multi-channel mobile telephone systems, intermodulation interferences will become increasingly high, often resulting in serious impairments on communication.
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