Minecraft wiki entry for Morse_code, associated text: If you have done decoding before, you might have noticed that the signal is the wrong way round as you inverted it when you got it to the repeaters, so you might be thinking didn't you will need to invert them then before you got to the repeaters, well the answer is no unlike most signals Morse code has lots of lapping over like A and E, E is dot and A is dot dash, as you can see the E is contained within the A for this reason, you will need to be able to define the requirements more, to do this you will in the end have basically have two and gates for each letter, but it will explained more of later.