30-watt amplifier scheme is continued from other pages shown below provides an energy boost in accordance with the input of 4 watts to 6 watts. increase power output function is to increase the distance of the sender and recipient. This circuit is designed to cover 88-108MHz FM Broadcast Band. However, this circuit is very stable in my place and provide a clean output through seven (7) Butter price element low-pass filter
The core of the circuit is 2SC1946A VHF RF power transistors. This transistor specifically designed to operate at frequencies up to 175 MHz, As you can see, well separated power lines. Current amplifier can be more than 5 amps. All coils are made of laminated 16gauge wire (copper or silver wire can do their best) and RFC can be HF toroidal core (as shown in the picture) or 6 hole ferrite bead. C3 and R1 form of snubber circuit while R2 and C6 prevents the amplifier from the self-oscillation in the VHF, sometimes you need to add a 180 ohm in parallel with L7.That will cause unwanted VHF amplifier to dissipate, thereby reducing the level of fake.
Photo below is 60Watts VHF power amplifier using the circuit above. Two 2SC1946A transistor set at 90 degrees to one another and their outputs are combined by using the “Combination Power Network”. And will be very difficult to combine the power of the VHF and UHF bands.