1. Two wire telegraph


In this practice we are going to make a telegraph with two Morse code transmitter-receiver stations.

Each station will have a button with which to send messages and a led that will receive messages from the other station.

Operation is "semi-duplex". The two stations can send messages and receive messages, which is why it is called duplex. But the stations cannot send messages both at the same time, and that is why it is called half-duplex.

The sheet to carry out the activity has the unfinished diagram on one side, so that it can be completed in pencil. On the other side is the complete scheme already finished.