Transmitters

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Long Range FM Transmitter
Long Range FM Transmitter
December 8, 2010

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 amplifier stage, after the oscillator stage, to raise the power output to 200-250 milliwatts. With a good matching... [more]

TV Transmitter
TV Transmitter
December 8, 2010

A VHF band TV transmitter using negative sound modulation and PAL video modulation. This is suitable for countries using TV systems B and G. [more]

FM Transmitter
FM Transmitter
December 8, 2010

A portable FM transmitter that can be used to replace a FM microphone. [more]

2 Transistor Transmitter
2 Transistor Transmitter
December 8, 2010

A compact 2 transistor transmitter for use at VHF frequencies. [more]

6 x 6 Loop Antenna
6 x 6 Loop Antenna
December 8, 2010

The antenna uses one, six foot square, six turn loop, and is aperiodic in nature, covering the frequency range 50KHz - 5000KHz. [more]

AM Transmitter
AM Transmitter
December 8, 2010

An AM voice transmitter with variable tuning. The antenna circuit is also tuned and transmits via a long wire antenna [more]

The ATL-3 Loop Antenna
The ATL-3 Loop Antenna
December 8, 2010

Simple The ATL-3 Loop Antenna circuit diagram [more]

FM Transmitter Circuit
FM Transmitter Circuit
December 6, 2010

A low power FM Transmitter using an op-amp as the audio preamp and a single transistor as the RF amplifier. [more]

4 Transistor Transmitter
4 Transistor Transmitter
December 6, 2010

This circuit provides an FM modulated signal with an output power of around 500mW [more]

FM Transmitter
FM Transmitter
December 6, 2010

A small FM voice transmitter for Band 2 VHF [more]

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