20dB antenna amplifier circuit
This 20dB antenna amplifier circuit is a very simple antenna amplifier circuit that use few common transistors and some resistors.
This 20dB antenna amplifier circuit can be useful for signal waves with a frequency between 0.1 to 400 MHz.
T1 transistor must be BF200 type (or similar ) and the other transistors can be BF214 type . For high efficiency , the antenna amplifier must be placed at a small distance from antenna .
This amplifier circuit can be powered using a power supply that supply an output voltage between 6 and 12 volts DC . For powering this device you need to use a shielded cable or a coaxial cable .