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FM Wireless Microphone – Circuit Schematic
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 has a variable tuned ci...
Mini FM Transmitter – Circuit Schematic
Mini FM Transmitter
This is a mini FM transmitter built and powered using 2 transistors, designed by Tony van Roon. This small transmitter is simple to build and its transmissions ...
AM Transmitter – Circuit Schematic
AM Transmitter
The following diagram is the schematic diagram of 4 transistors FM transmitter circuit designed by Paul K. Sherby. Components List: R1, R2, R8 = 1K R3 = 100K R4...
AM Radio Receiver – Circuit Schematic
AM Radio Receiver
Here the AM Radio receiver circuit diagram based on old single IC MK484. Components part list: R9, R10_ 6R8 R6_ 100R R3_ 1K R1_ 4K7 R7_ 5K6 R4_ 10K R2_ 100K R5_...
9V FM Radio Transmitter – Circuit Schematic
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. R...
4 Stage FM transmitter circuit diagram – Circuit Schematic
4 Stage FM transmitter circuit diagram
4 Stage FM transmitter circuit diagram. It uses four radio frequency stages: a VHF oscillator built around transistor BF494 (T1), a preamplifier built around tr...
2 Transistor Mini FM Transmitter – Circuit Schematic
2 Transistor Mini FM Transmitter
This is a mini FM transmitter built and powered using 2 transistors, designed by Tony van Roon. This small transmitter is simple to build and its transmissions ...
15W FM RF Amplifier with 2SC2539 – Circuit Schematic
15W FM RF Amplifier with 2SC2539
This the Good Quality FM transmitter for your stereo or any other amplifier gives you a pretty good signal strength up to a range of 500 metres having a power o...
1.5 Watt FM Transmitter – Circuit Schematic
1.5 Watt FM Transmitter
P1 act as condenser microphone volume level. For FM, coil will be small. Use thin gauge enamel magnet wire. the diameter of coil will be a couple mm: use ink tu...
AM portable Reciever Using ZN414 – Circuit Schematic
AM portable Reciever Using ZN414
This is a circuit diagram circuit AM portable radio receiver made from the ZN414 IC. The ZN414 ic has now been replaced by the MK484 which is identical in perfo...
active medium wave antenna – Circuit Schematic
active medium wave antenna
Circuit diagram is designed to strengthen the input of a telescopic whip antenna. The Preamplifier is designed to cover the medium waveband from about 550Khz to...
am transmitter circuits – Circuit Schematic
am transmitter circuits
The AM Transmitter circuits in two and a half, audio amplifier and an RF oscillator. The oscillator is built around Q1 and associated components. Tank circuit L...
tv-transmitters circuits – Circuit Schematic
tv-transmitters circuits
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fm transmitters circuits – Circuit Schematic
fm transmitters circuits
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radio circuit – Circuit Schematic
radio circuit
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Wideband RF Field Strength Meter – Circuit Schematic
Wideband RF Field Strength Meter
Field strength meter is extremely useful when working with RF devices. It can be used to quickly diagnose whether a transmitter circuit is working, and can be u...
Vhf-modulator – Circuit Schematic
Vhf-modulator
This circuit uses an oscillator (2N2222) and a diode Dl as a nonlinear mixer. The frequency is set by a slug in Ll. RFCl, Cl, and RFC2 form a low-pass filter to...
VHF FM Antenna Booster Circuit – Circuit Schematic
VHF FM Antenna Booster Circuit
Together with a good directional antenna this high performance two-stage antenna amplifier for the VHF FM broadcast band will enable you to capture far rem....
VHF-UHF Antenna Amplifier (Booster) 40-500MHz – Circuit Schematic
VHF-UHF Antenna Amplifier (Booster) 40-500MHz
This amplifier has VHF (very high frequency) and UHF (ultra high frequency) response, you can use it for receiver booster for example. Here is the schematic....
USB FM Transmitter circuit – Circuit Schematic
USB FM Transmitter circuit
Here is a simple USB FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio by connecting it to an....