811 Tube History including 811A 572B

Tuning an AL80B With Tuning Pulser and TOF module

AL811 AL811H Ameritron Critical Safety Mods

TTT081 How Tubes Work

3X572 AL811

Ameritron ALS600, ALS606, ALS1300, ALS1306 Field Failure Correction

How Antennas Radiate

HF Amplifiers Explained! - Ham Radio Outlet

How Tube Amplifiers Work, Part 1: The Power Supply

Mr R's AMERITRON AL-811H repair :)

Noise Testing the 12AX7 Vacuum Tube

Ameritron Al 811 Repairs - Popping, Bulbs, Fan

Ameritron Amplifier AL-811 Instructions Have MANY MISTAKES About Tuning As Shown By Jim Heath W6LG

Testing Capacitors - Simplified and Explained - BG029

Fast Carrier Tuning the 811H Amplifier

Red Plating Vacuum Tubes to Destruction!

Filament Voltage and Transmitting Tube Emission Life

Output Transformers: A Discussion of Basic Principles

30L-1 Performance and Reliability Improvement

AL-811 811A Tube upgrade to DX Engineering 572B

Dentron clipperton tuning