The selecting frequency network usually located in the amplifying circuit, or located in the positive feedback network.

其中的选频网络一般可以设置在放大电路中，也可以设置在正反馈网络中。

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The single frequency network (SFN) is the key technology in very high frequency (VHF) channel transmission of automatic hydrological forecast systems.

单频组网是水情自动测报系统中采用特高频信道传输的关键技术。

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Finally this expansion of the demonstration of the GPS receiver lost lock circumstances, the single frequency network adapter time synchronization of the impact.

最后本文扩展性的论证了GPS接收机失锁情况下，对本文所设计的单频网适配器时间同步所产生的影响。

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There are two main methods of creating a single-frequency network.

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"Low-frequency spectrum on a network as big as ours is a real notspot-killer, " he said.

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The cheapest way to increase capacity is to add more spectrum or to move a network to a lower frequency, which allows radio waves to penetrate walls more easily.

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