Módulo transmisor de micrófono de radio FM 2 piezas DC 3-6V 80MHz-108MHz PCB kits hágalo usted mismo

Frequency range: 80MHz—108MHz. R1 is the bias resistance of the MIC electret microphone. With this resistance, the microphone can output audio signals. This is because the MIC microphone itself has a FET amplifier circuit for impedance matching and improving output capacity.

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