audio frequency

Garmin’s Descent T1 transmitter taps those audio frequencies, allowing groups of divers to keep closer tabs on one another.

First I would learn to use it as an audio-frequency amplifier.

In the case of Fig. 94 we are amplifying the audio-frequency current.

Then you will have the right equipment when you come to make a two-stage audio-frequency amplifier.

Use your audio-frequency transformer the other way around so as to step up to the grid.