Microphone Audio Compressor in Single Sideband Radio
This microphone audio compressor for SSB radio combines a low-noise preamplifier with automatic gain control…
Articles
HF
radio
Tools
Articles
audio
Ebook
HF
Can You Use MXR Dyna Compressor for SSB Radio?
This article explains why the MXR Dyna Comp, a guitar compressor pedal, is not suitable…
audio
Circuits
DIY
Tools
Microphone compressor using LM1458
The LM1458 is a dual operational amplifier (op-amp) that finds applications in audio amplification and other…
audio
Circuits
DIY
Tools
Condenser Mic audio amplifier – DIY Guide
The compact, low-cost condenser mic amplifier described here give good-quality audio of 0.5 watts at…
audio
Circuits
DIY
Tools
Dual microphone noise cancellation using LF351 Op Amp
This dual-microphone noise cancellation circuit uses two microphones placed back-to-back, with one signal inverted and…
Circuits
DIY
HF
QRP
radio
Transmitter
Series Modulated AM Transmitter
This series-modulated AM transmitter uses a simple low-power design where the audio signal is applied…
Circuits
HF
QRP
radio
Transmitter
Class C – AM Transmitter
This Class C AM transmitter uses a high-efficiency amplifier where the transistor conducts for less…
audio
Circuits
DIY
Tools
Noise Cancelling Condenser Microphone
This noise-canceling condenser microphone design uses dual electret microphones with op-amp stages to reduce ambient…
audio
Circuits
DIY
Tools
Microphone compressor using two transistors
This microphone compressor circuit utilizes a two-stage amplification design for dynamic range control. Initially, the…