Power Supplies
DC power supply
Power Circuits
6CA4 Power Suply
Tube Power Supply Design
8 Simple Power Supplies
Oscillators
Hartley Oscillator
Types of Oscillators
Vacuum Tube Recievers and Transmitters
Crystal Sets to Sideband
Superhetrodyne First Detectors and Oscillators
Tuned Plate, Tuned Grid, Hartley, Colpitts, Electron-Coupled and Negative Transconductance Oscillators
Waveguides
How To Build A Tin Can Waveguide WiFi Antenna
"Mobile Amateur (Doppler) Rain Radar" Project
How to build “cantenna”, a wave guide antenna out of a coffee can
Amplifiers
Vacuum Tube Audio Amplifier
Fun With Tubes - Amplifiers and Other Circuits
Vacuum Tube Amplifiers
A Collection of Circuits
Electronic Ampl;ifier Cuits
6N7 Tube QRP Power Amplifier
Detectors and Discriminators
Fun With Tubes
Homemade Tube Radio
All American 5 Sub-mini Tube AM Radio
Modulators
Basic Types of Modulators
Heising Modulation
Modulators and Demodulators
Methods for Generating Amplitude Modulation
The Simplest Modulator
Demodulators
Demodulator Circuit and discussion
What is a Modulator / Demodulator?
RCA Tube Manuals
GE-Transistor Manual 1964.pdf
1975 RCA Tube Manual
GE Tube Manual 1964.pdf
RCA Tube Manual 1963.pdf
RCA Transmittig Tube Manual 1964.pdf
Modifications
Signalink UBB Noise Floor Modification