Manual switch, superheterodyne receiver , good anti - jamming , with commutator, easy to install.
带手动开关, 超外差接收, 抗干扰性强, 带换向功能, 安装方便.
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英英释义
Noun
1. a radio receiver that combines a locally generated frequency with the carrier frequency to produce a supersonic signal that is demodulated and amplified