Car Fm Antenna Booster Circuit Diagram
Using this antenna booster circuit for short wave reception an 8 antenna would produce a strong signal level equivalent to a 20 to 30 feet wire antenna.
Car fm antenna booster circuit diagram. The total gain of the car antenna amplifier is around 30 db and the input impedance at 30 mhz is around 10 kw. 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. This inexpensive fm radio receiver antenna booster uses the bf324 to92 style pnp transistor in a grounded base configuration. Diy fm antenna circuit diagram.
It has a high input impedance and a low noise figure. The circuit is using two tunable. The transistors are general purpose 2n3904. Use around 470uh coil for l1 if you use for am frequency 700khz 15mhz and use around 20uh for sw or fm receiver.
The circuit may be used as a signal booster with vhf receivers whose front end suffers from low sensitivity such as many valved and army surplus types. The antenna fm booster circuit comprises a common emitter tuned rf preamplifier wired around vhfuhf transistor 2sc2570 c2570. In this project we discuss a fm booster that can be used to listen to programs from distant fm stations clearly. Car fm antenna installation with booster testing duration.
Adjust inputoutput trimmers vc1. The circuit is using two transistors to increase signal gain to good level. Car antenna amplifier circuit. Electronic circuit projects electrical projects electronic engineering radios fm radio receiver electronics basics kids electronics diy amplifier ham radio.
This antenna booster circuit is designed for general radio receiver which its antenna is not tuned for specific frequency but for a wide band frequency. You can also use this antenna with any fm antenna amplifier or fm antenna booster circuit. Here is a design of a simple diy fm antenna which you can make to receive distant radio stations and improve the reception of your fm receiver. Only c2570 is annotated on the transistor body.
Here is the schematic diagram of the circuit. Fm booster circuit assembly. For short wave performance using this antenna booster youll get a strong signal as we get from a 20 30 feet antenna with only a standard 18 telescopic antenna and this booster circuit. Assemble the circuit on a good quality pcb preferably glass epoxy.
For short wave performance using this antenna booster youll get a strong signal as we get from a 20 30 feet antenna with only a standard 18 telescopic antenna and this booster circuit. This is a low cost fm antenna booster that can be used to listen to programmes from distant fm stations clearly. Use around 470uh coil for l1 if you use for am frequency 700khz 15mhz and use around 20uh for sw or fm receiver.