Morse Code Keyer: Tap Out Morse Like a Telegraph Operator
Every Morse message ever sent started with a finger on a key. This online keyer puts one under yours. Tap, hold, release — and watch your rhythm turn into dots, dashes and, if your timing is right, real words.
Press and hold key button or spacebar
Short press = Dot (.) • Long press = Dash (-)
Send Morse Code With Your Spacebar
This keyer works like a straight key, the simplest Morse key there is. Press and hold the on-screen key or your spacebar to send a signal, then let go.
- A short press sends a dot (dit).
- A longer press sends a dash (dah) — about three times as long as a dot.
- Add a space between letters and words so the translator knows where one ends and the next begins.
As you key, the Morse appears on screen and the translation builds beside it, so you get instant feedback on your timing. If a letter comes out wrong, your dots and dashes were probably too close in length — exaggerate the difference and try again. Adjust the keyer settings to suit your speed, and download your Morse when you're done.
Try sending SOS: three quick taps, three long holds, three quick taps.
What Is a Morse Code Key?
A Morse code key is the switch an operator uses to send Morse. Pressing it closes an electrical circuit; releasing it opens the circuit again. How long you hold it decides whether the signal is a dot or a dash.
You'll hear two words used, and they mean slightly different things:
- Key — the hand-operated switch itself, such as a straight key or paddle.
- Keyer — an electronic circuit that works with paddles to form perfectly timed dots and dashes automatically.
On the old telegraph lines, the key had a partner at the other end: the sounder. Each signal energised an electromagnet in the sounder, pulling down a metal arm with a sharp click and releasing it with a clack. Operators read the time between those sounds and wrote the message out by hand.
Types of Morse Code Keys: Straight Key, Bug and Paddles
Morse keys have evolved from simple levers into precision tools. Each type asks a little more of the electronics and a little less of your wrist.
| Type | How it works | Speed | Best for |
|---|---|---|---|
| Straight key | A single up-and-down lever. You time every dot and dash by hand | Slow to moderate | Beginners learning rhythm |
| Semi-automatic "bug" | Press sideways one way for a vibrating arm that sends dots automatically; dashes stay manual | Fast | Experienced hand senders |
| Single-lever paddle | Push one way for dots, the other for dashes; a keyer times them | Fast | Clean, simple high-speed sending |
| Iambic (dual) paddles | Two paddles, one for dots and one for dashes; squeezing both alternates them | Very fast | Contests and fluent operators |
The straight key is where almost everyone starts, and it's exactly what this online keyer recreates. Once your timing is steady, paddles and a keyer take the strain off your hand and let you send for hours.
How an Electronic Iambic Keyer Works
An electronic keyer takes the timing off your hands. Instead of holding a key for the exact length of each signal, you press a paddle and the keyer produces a perfectly measured dot or dash at the speed you've set.
With iambic paddles, the keyer does even more:
- Hold the dot paddle for a steady stream of dots.
- Hold the dash paddle for a steady stream of dashes.
- Squeeze both and the keyer alternates — dot, dash, dot, dash — so a letter like C (-.-.) takes one squeeze instead of four separate movements.
Keyers come in two common modes. In Mode A, sending stops the moment you release the paddles. In Mode B, the keyer adds one extra opposite element after you release a squeeze. Most operators pick one and stick with it, because switching scrambles muscle memory.
Keyers also produce a sidetone — a beep you hear as you send — so you can monitor your own Morse in real time.
Choosing Your First Morse Code Key
The best Morse key is the one that matches where you are as a learner.
- Start free, online. Use this keyer to learn the feel of timing before spending anything. Pair it with the Morse code machine to hear each letter as you type it.
- Get a straight key and practice oscillator. A straight key wired to a small speaker lets you practise sending away from the screen and builds the rhythm every operator needs.
- Move to paddles when you're ready for speed. Once you can send cleanly at around 15 words per minute, a set of paddles and an electronic keyer will take you further with less effort.
- Choose for feel. Look for a key that sits heavy enough not to slide, with adjustable spring tension and contact spacing so you can tune it to your hand.
Collectors also hunt for vintage telegraph keys and sounders, which still work and make striking display pieces.
FAQs – Morse Code Keyer
Q1: What is a Morse code keyer?
A Morse code keyer is an electronic device that works with paddles to send perfectly timed dots and dashes. People also use the word for any Morse sending device, including this online keyer, which works like a classic straight key.
Q2: How do I use this online Morse code keyer?
Press and hold the on-screen key or your spacebar. A short press sends a dot and a longer press sends a dash. Add a space between letters, and the translation appears as you go.
Q3: What is the Morse code clicker called?
The device you press is called a telegraph key or Morse key. The device that clicks at the receiving end is called a sounder, which converts each electrical signal into a click and clack.
Q4: What is the difference between a key and a keyer?
A key is the hand-operated switch, such as a straight key or paddles. A keyer is the electronic circuit that takes input from paddles and generates evenly timed dots and dashes at a set speed.
Q5: What is the best Morse code key for beginners?
A straight key is the classic first choice, because it teaches you to time every dot and dash yourself. Practise online first, then add a straight key and practice oscillator before moving on to paddles.
Q6: What is an iambic keyer?
An iambic keyer works with two paddles, one for dots and one for dashes. Squeezing both makes it alternate dot and dash automatically, which lets skilled operators send letters like C and K with fewer hand movements.
Q7: What is a bug key in Morse code?
A bug is a semi-automatic mechanical key. Pushing the lever one way sets a weighted arm vibrating to send a run of dots, while pushing it the other way sends dashes by hand. It was popular with telegraph and radio operators who needed speed.
Q8: Why do my dots and dashes come out as the wrong letters?
Usually your dots and dashes are too similar in length, or your gaps between letters are too short. Make dashes clearly longer — about three times a dot — and pause a little longer between letters.