1. Enhance radio signal and reduce noise 2. Easy to assemble, save cost and space 3. Working frequency: FM 80MHz-108MHz, AM 520KHz-1710KHz 4. Gain: FM 10dB, AM 8dB 5. Impedance: 75 ohms 6. Working current: 10mA- 30mA 7. Working voltage: DC 10.5V - 16V
