| Brand | Generic |
|---|---|
| Type | Ham Radio Transmitter |
| Unit Type | Unit |
| Manufacturer Warranty | 2 years |
| Color | Green |
| Band | FM |
Check the listing for details. 2Pcs FM Radio Microphone Transmitter Module DC 3-6V 80MHz-108MHz PCB DIY Kits. Color: Green, Condition: New. Listed at 6.98 USD. 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.