1Watt AM CW Transmitter for 10 Meterband
1Watt AM CW Transmitter for 10 Meterband In this project, you will make a simple 3-stage low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM...
View Article4 Transistor FM Transmitter
4 Transistor FM Transmitter This circuit provides an FM modulated signal with an output power of around 500mW. The input microphone pre-amp is built around a couple of 2N3904 transistors (Q1/Q2), and...
View Article300 MHz Prescaler
300 MHz Prescaler A preamp that drives the CMOS counter input and a divide by 10 prescaler to extend the range of A Little More Serious Frequency Meter. The MCT10280 prescaler can be set to divide by...
View Article40 Watt FM Transmitter Amplifier
40 Watt FM Transmitter Amplifier Building two stage 40 Watt FM Transmitter Amplifier. RF input power should be between 0.5 and 1 watt. Amplifier is powered by 28V power supply. The diagram shows a...
View Article2 Watt FM Transmitter
2 Watt FM Transmitter This 2 Watt FM transmitter will provide 10km range in good weather conditions. Use dipole antenna for maximum range. Transmitter can be tuned between 88-108 MHz with c5. BB204...
View Article400mW VCO FM transmitter
400mW VCO FM transmitter With good antenna (dipole placed outdoor and high) the transmitter has very good coverage range about 500 meters, the maximal coverage range is up to 4 km.
View Article300mW FM Transmitter
300mW FM Transmitter Here's a long range 300mW FM Transmitter for the 88MHz to 108MHz band. This particular TX is of special interest to those wishing to build low power Power Amplifiers for the VHF...
View Article40mW FM TRANSMITTER
40mW FM TRANSMITTER The transmitters on my homepage seem to be quite popular, especially those intended for the 88 - 108MHz FM band. I must really confess that I also favor this broadcast band, mainly...
View Article200mW FM Broadcast Transmitter
200mW FM Broadcast Transmitter A simple 200mW FM Transmitter circuit which covers frequencies from 88 to 108 MHz. It is built with 3 transistors: BC109, BFR91A and BFR96S. It is quite stable and the...
View Article30W Digital RF Wattmeter
30W Digital RF Wattmeter This project will explain how I build my new wattmeter.This watt meter will be able to measure power from 300nW to 30W @ (0-500MHz).This wattmeter is based up on a dummy load...
View Article5 Watt FM Amplifier
5 Watt FM Amplifier This design is a 2 stage amplifier that has about 17db of gain, suitable for an input of 50 to 100 MW. Its basically a Veronica 5 watt vco transmitter, without the vco. The...
View Article20W FM Amplifier
20W FM Amplifier This Power amplifier is equiped with two Philips bipolar transistors : the BLV10 Output) have been determined by using the software: Mimp.EXE. A 9 elements low pass filter ensures that...
View Article2km Long Range FM Transmitter
2km Long Range FM Transmitter The power output of many transmitter circuits are very low because no power amplifier stages are incorporated. The transmitter circuit described here has an extra RF power...
View Article30W VHF FM Amplifier for 88 - 108 MHz with BLF245 MOSFET
30W VHF FM Amplifier for 88 - 108 MHz with BLF245 MOSFET The achievement of this 30-watt amplifier has been designed to take place on a heatsink microprocessor PC equipped with its fans, the advantage...
View Article250mW FM Transmitter Amplifier
250mW FM Transmitter Amplifier This project is a simple 2-transistor VHF power amplifier, with about 16dB gain, and requires no tuning or alignment procedures. Wideband techniques have been used in the...
View Article25W RF amplifier
25W RF amplifier RF amplifier with 25W of power for 88-108MHz FM transmitters.
View Article2km TV Transmitter
2km TV Transmitter Here is a simple TV transmitter. The circuit is simple and really quite crude, but it does include MONO sound. I have not shown the two regulators in the drawing. These are one 12v...
View Article1W portable PLL transmitter
1W portable PLL transmitter This small FM transmitter includes a limiter, a microphone amplifier and a PLL digital tuning. All the parts are placed on one circuit board. The RF power is switchable...
View Article28W FM Broadcast Transmitter Amplifier 88-108 MHz
28W FM Broadcast Transmitter Amplifier 88-108 MHz This RF Amplifier designed for FM broadcast using a single 2SC1946 VHF Power Transistor. This 10-30W RF amplifier circuit provides an appropriate power...
View Article150W FM Transmitter Amplifier
150W FM Transmitter Amplifier This is 150W FM transmitter amplifier for 88-108MHz band. The amplifier has two stages using BLF244 mosfet transistor for the first stage which requires 0.5 - 1Watt of RF...
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