Dynamic speech compressor with audio preamplifier
This dynamic speech compressor with audio preamplifier combines a transistor-based preamp and op-amp gain stage…
Circuits
DIY
HF
QRP
Transmitter
Simple two stage one watt AM transmitter
This simple two-stage AM transmitter uses an oscillator and a transistor RF amplifier to deliver…
Circuits
DIY
HF
QRP
radio
Transmitter
Simple series modulated AM QRP HF Transmitter
Build a Simple Series Modulated AM QRP HF Transmitter for the 40m or 80m bands.…