Restoring a Vintage Zenith Table Top AM/FM Receiver from the '60s | Nuts & Volts Magazine
Audio Transformer and Impedance Matching Transformer
Low Power AM Amplifiers from Alfredo T - Low Power Radio Archives
LM386 Amplifier Circuit - Working Specifications Explained | Homemade Circuit Projects
Using a Variac to Power Up an Old Radio or Amplifier | Simply Smarter Circuitry Blog
Intermediate frequency - Wikipedia
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Build Your Own Professional-Grade Audio Amp on the Sort of Cheap - IEEE Spectrum
Some thoughts on low cost, solid state, kilowatt-class HF linear amplifiers
Low cost AM radio
A low cost 600 watt ultra-linear amplifier - IW5EDI Simone - Ham-Radio
The Best Stereo Valve Amp In The World | Hackaday
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Build a Very Simple AM Transmitter. : 4 Steps - Instructables
Simple AM transmitter using only crystal and audio amplifier | All About Circuits
AM Modulators - Base, Collector, Grid and Plate Modulators | D&E notes
old 813 homebrew Amp
6H30 + 6AQ5 active load pre amplifier board, dual channel design, low internal resistance and large dynamic|Transformers| - AliExpress
Build Your Own Professional-Grade Audio Amp on the Sort of Cheap - IEEE Spectrum
Low Phase Noise Design: Isolation Amplifiers
The Magnetic Amplifier | Nuts & Volts Magazine
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A simple AM modulator
