
T
he transmitter that you built in Experiment 1
was a bare-bones device that could only send
test tones. You can think of it as being AMTzero.
Now it’s time for AMT1, which is built around
only one transistor, yet can send speech and
music. You will be able to pick up its signal with
an off-the-shelf radio, or you can receive it using
AMR2, the receiver that you built in Experiment
2 (so long as you don’t need to repurpose ...