Welcome. Navigate to explore our transmitters circuits. 
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Morse Practice FM Transmitter
Morse Practice FM Transmitter
FM mini bug
Miniature FM Wireless Microphone
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Theory

Digital, real time, Audio Frequency LED Spectrum Analyzer
555 Timer basics
LC Oscillators Basics
Feedback Oscillators Basics
Vital-Radio Technology
The solderless Breadboard
Op-amp voltage regulator concept
Precision rectifiers explained
Basic Linear Power Supply Circuits Design