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(2)传声器——拾取空间的声波。传声器极头可选用动圈式传声器极头,也可以选用驻极体传声器极头和电容式传声器极头。音放——音频放大电路将由传声器极头拾取的音频信号电平加以放大并进行调制,成为调频信号,送入混频电路。本振——本机振荡器采用石英晶体振荡器,产生甚高频载波信号,送入混频电路。混频——混频电路将音频信号和载波信号叠加混合,送入高频放大电路中。高放——高频放大电路将带有音频信号的载波的电平加以放大。
(2) Microphone - pick up sound waves in space. Microphone microphone optional moving coil microphone pole, you can also use electret microphone pole and condenser microphone pole. Amplifier - The audio amplifier circuit amplifies and modulates the level of the audio signal picked up by the microphone tip into a frequency modulated signal that is fed into the mixer circuit. LO - Local Oscillator Quartz crystal oscillator, resulting in very high frequency carrier signal into the mixer circuit. Mixing - The mixing circuit mixes the audio signal with the carrier signal and feeds it into a high-frequency amplifier. High-level - high-frequency amplifier circuit with the audio signal carrier amplifier to be amplified.