This is a very simple FM receiver which build based on one transistor only. No chip or another active component. The output is connected to earphones, you need an amplifier circuit if you want to listen […]
Category: Radio
FM Receiver with TDA7021T
This is the circuit diagram of mini FM receiver that build based on single FM IC TDA7012T. Components List: R1 = 8k?2 R2 = 10k? R3 = 390? C1,C3 = 10nF C2,C6,C9,C16 = 100nF C4 = […]
Three Stage 9V FM Transmitter
This circuit is a powerful three stage, 9V FM transmitter (Tx) with a range of up to 1 kilometer in the open. It uses an RF transistor in its output stage and two BC547″s for the […]
Basic RF Oscillator
If you’re interested in RF circuit, then you should know about this basic RF oscillator. This basic RF oscillator circuit is easy to build and the components are not critical. Most of them can be found […]
AM Radio Receiver
This is the circuit diagram of mini AM Radio receiver. All general purpose transistors should work in this circuit, you can use BC549 transistors for this circuit.
9V FM Radio Transmitter
Here the simple and low cost FM transmitter circuit. The frequency range of this FM transmitter should be about 89MHz ? 109MHz. Output power is about 9mW at 9V. Components List: Resistors: R1, R6 : 12K […]
UHF TV Antenna Booster
This is the circuit diagram of UHF band TV antenna booster with 15dB gain power. This low cost antenna booster is simple and easy to build.It use single transistor BF180 to boost te UHF signal. Since […]
15W FM RF Amplifier with 2SC2539
This is a 15W FM RF amplifier circuit which build based on RF Power Transistor 2SC2539. 2SC2539 is a silicon NPN epitaxial planar type transistor designed for RF power amplifiers in VHF band mobile radio applications. […]
FM Wireless Microphone
Below is the circuit diagram and PCB layout of FM wireless microphone: The range of frequencies for the FM broadcast band is 90MHz (MHz = Megahertz or 90 million cycles per second). Because the FM microphone […]
Active FM/AM/SW Radio Receiver Antenna
This is an active FM/AM/SW radio receiver antenna, can be used for FM radio receiver, AM radio receiver and SW (shortwave) radio receiver. This circuit use active component JFET VHF Amplifier MPF102 to boost the radio […]