Morse Code Keyer

This page emulates a Morse keyer combined with an iambic paddle.


Left-click, or press x

Right-click, sends a Dah



A keyer (combined with a "paddle") makes sending Morse code easier than the traditional "straight key" which most people would imagine is used. Instead of having to precisely time the dits, dahs and the spaces in between a paddle/keyer combination does a lot of the timing for you, using a speed setting of your choice. Pushing the paddle one way sends a string of repeating dits and pushing the paddle the other way sends a string of dahs.

An "iambic" keyer uses two paddles side by side and therefore lets you press both at once ("squeezing" them): in this mode dits and dahs will alternate. The keyer defaults to "iambic A" mode which sends alternating dits and dahs while both keys are pressed. With the toggle switch you can change to "iambic B" mode which adds one extra dit or dah to the end of the sequence.

This tool is configured to use the "Z" key for one paddle and the "X" key for the other. Which one sends a dit (left or right handed) can be changed. Alternatively, the mouse can be used: either holding the left-button down and moving from one side to the other, or keeping the mouse in one position and using both left and right buttons. This second mode is suitable for when you have a Morse key connected to your computer's mouse interface.

The message is decoded and typed out in the page as you send it, with unrecognisable characters shown with a "#". Hovering over a character in the message shows the dits and dahs for that character.

Change log