[Applied Science] shows how to make an RF spectroscope. You can see the video below. An oscilloscope-resident function generator creates a signal that he feeds to an amplifier because you need a ...

Making an oscilloscope is relatively easy ... Inside the instrument is a pair of sample-and-hold circuits using fast diodes as RF switches, triggered by very low-rise-time short pulses.

Teledyne LeCroy exhibited its HDO6104B four-channel 12-bit oscilloscope and assorted voltage, differential, and current ...