About thirty cents and some wire are all it takes to start hacking extra features into this DX6i transmitter. The DX6i is a six-channel, two-mode transmitter used to control hobby airplanes and ...

Two-wire transmitter technology came about from an agreement among various instrument suppliers in the 1950s to standardize on 4-20 mA current loops as a means of sending a flow, temperature, pressure ...

There's no magic behind this; it's just the way things work. Just as the electrons move in the wire, they move in the transmitter's antenna. And just as an electromagnetic field is created around ...