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对讲机的扩频与改频仰慧林在国内常见的频率合成式对讲机中，有相当一部分在同一ＶＨＦ（或ＵＨＦ）频段均分作高段（ＶＨＦ：１５０～１７４ＭＨｚ；ＵＨＦ：４５０～４７０ＭＨｚ）和低段（ＶＨＦ：１３６～１５０ＭＨｚ；ＵＨＦ：４００～４２０ＭＨｚ）两种型式，如健...
Spread Spectrum Walkie Talkie and frequency conversion Yang Huilin In the common frequency synthesis walkie-talkie in China, a considerable part of the same VHF (or UHF) band are divided into high segment (VHF: 150 ~ 174MHz; UHF: 450 ~ 470MHz) and low Segment (VHF: 136 ~ 150MHz; UHF: 400 ~ 420MHz) two types, such as health ...