tunable preamplifier
... laser preamplifier 激光前置放大器 tunable preamplifier 可调前置放大器 Ophthalmic preamplifier 眼科用光刺激器 ...
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作者的解决这个问题是使用可调谐射频前置放大器这也渠道作为一个低通滤波器调谐88-108兆赫时，低端的带异国情调的地方大部分的谎言。
The author's solution to this problem is to use a tuneable RF preamplifier which also acts as a low pass filter when tuning the low end of the 88-108 MHz band where most of the exotic channels lie.
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