Wednesday, February 7, 2018

AM-FM-SW Antenna Booster

If you plan on visiting someplace where AM-FM-SW signal is really poor you can make a simple circuit that will slightly boost the signal so that you can get a better reception.

Components Needed:

Resistor:

1 1MΩ 

Capacitor:

2 470pF
1 0.47µF

Inductor:

1 470µH for AM
1 20µH For FM/SW

Antenna:

18" Telescopic

Battery:
9V PP3/6 AA.


Diagram:

   
Note:

1. Place the 0.47µF capacitor as close as possible to the Inductor.
2. If you can't find the MPF102 use any medium power NPN RF Transistor.

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