oscillator tube

This put the powerful Arcot oscillator tubes into action, and the power was ready for application.

They're starting the oscillator tubes, warming them up.

Or order fifty No. 27-R-29 oscillator tubes, when you hoped to make a satisfactory lie detector.

And huge oscillator tubes glowed dull-red.

The frequency mixer was of the pentagrid converter design to save the cost of a separate oscillator tube.

The apparatus he mentioned was simply a high-frequency oscillator tube of extreme power which caused vibrations approaching light frequency to be set up in the molecules of the ship.

Here they heard the soft purring of a large oscillator tube and the indistinguishable murmur of smoothly running AC generators powered by large contraterrene reactors.

The six-tube versions added either a RF amplifier tube, a push-pull audio power amplifier tube, or a beat frequency oscillator tube (to listen to Morse code or single-sideband modulation transmissions).

Armstrong's solution was to set up an oscillator tube that would create a frequency near the incoming signal, and mix it with the incoming signal in a 'mixer' tube, creating a 'heterodyne' or signal at the lower difference frequency, where it could be amplified easily.