“Diode Modulation” is a simple means of creating an AM signal. The exciter creates the carrier. Audio is combined to create amplitude and sidebands and then sent to a half-wave rectifier. This signal ...

It’s been a long time since vacuum tubes were cutting-edge technology, but that doesn’t mean they don’t show up around here once in a while. And when they do, we like to feature them, because there’s ...

One of the great ironies in broadcast engineering is that we all grew accustomed to generating large of amounts of linearly modulated RF with amplifiers that were themselves very non-linear whether it ...

A standard early electronics project or kit has for many years been the construction of a small broadcast transmitter with enough power to reach the immediate area, but no further. These days that ...

Marked on front panel plate: "Type CG 1410 / Vacuum Tube Transmitter / For Type SE-1370 / Aircraft Radio Equipment / Wavelengths 507-600-800-975 Meters / Made for Navy Dept. (BU. ENG.) / by General ...