Start here · Essential guide
Diagram of a Radio Transmitter
A plain-language diagram of a radio transmitter: the main stages from microphone to antenna, how CW, SSB and FM chains differ, and how to read the drawing.
Equipment & Emergencies
Radio Electronics
6 guides, starting with Diagram of a Radio Transmitter.
Audio Processor for Ham Radio: Improving Transmit Audio
How an audio processor for ham radio works: equalization, compression and noise gating, built-in versus external units, and setup tips to avoid overprocessing.
Block Diagram of a Radio
Understand the block diagram of a radio: transmitter, superheterodyne receiver, transceiver and software-defined radio, with each stage explained in plain terms.
Ham Radio Formulas Every Operator Should Know
Handy ham radio formulas: Ohm's law, power, wavelength, dipole length, decibels, reactance and resonance, and SWR, with worked examples and caveats.
Ham Radio Schematic Symbols and How to Read Them
Learn the common schematic symbols used in ham radio circuits, from resistors and capacitors to transistors and antennas, and how to read a circuit diagram.
Radio Repeater Diagram: How the Parts Fit Together
A radio repeater diagram explained: receiver, transmitter, duplexer, controller and antenna, plus input and output offsets and how repeater tones work.
Related topics