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    This car antenna amplifier can be used up to 70 MHz and is specially designed to boost the weak signals captured by the car antenna.
    It has a high input impedance and a low noise figure.

    The total gain of the car antenna amplifier is around 30 dB and the input impedance at 30 Mhz is around 10 KΩ. The amplifier must be mounted directly at the base of the antenna to avoid signal losses caused by the capacitive character of the coaxial cable.

    This antenna amp must be used for non-mobile recievers. If you intend to install this circuit in you outdoor mounted antenna, make sure that is housed in a water proof case. Use this car antenna amp circuit only for receiver antennas. Transmitting through it will damage the components.

    Car Antenna Amp Circuit Diagram

    car antenna amplifier circuit schematic

    Antenna Amplifier PCB Layout

    car antenna amp pcb layout

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    9 Responses to "Car Antenna Amplifier Circuit"

    1. Great info.
      BTW, I want to make antenna for STB dvb-t receiver that can use on my car.. can you help me send the schematics to my email?

      Thanks a lot :)

    2. Efrain Drizin says: on June 22, 2012 at 4:42 pm

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    3. How can U increase the frequecy range of a car radio from 90-109 MGHz. Coz my radio cassette receiver only range from 87.5-108 MGHz.

    4. can i get the function of each component on a car antenna amplifier circuit?

    5. Does it work with a 9V battery?

    6. Hi

      Can i use BF195 tr coz i did not found that tr in local radio shak

    7. karolisxx78gmail-com says: on April 20, 2016 at 10:50 pm

      what is here capacitors C1-100pF, C2-? C3-? C4-? C5-?

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