Code Group Training

Copy random groups of letters, figures, or your chosen characters.

Guest Mode

You can train right away without registration. To save session statistics and sync progress, please login or create a free account.

Practice

Ready to start...

Your answer

💡 Tip: Use spaces to separate code groups. Type in UPPERCASE.

Session Time

00:00

Session statistics & duration

📊 Stats

Groups Sent

Characters

Progress

⏱️ Duration

2 min

1 min 5 min 10 min

⚙️ Current Parameters

Loading parameters...

🎯 Session Results

📈 Performance Summary

Final Accuracy

WPM (PARIS)

CPM

Total Errors

🔍 Accuracy Analysis

Group-Aligned Accuracy

Strict group-by-group comparison

Levenshtein Accuracy

Edit distance based (more forgiving)

ℹ️ Final accuracy uses the better of the two methods (LCWO standard)

🎨 Character Error Heatmap

Perfect

Some errors

Many errors

🔍 Character-by-Character Comparison

See exactly where you made mistakes - Green = correct, Red = error

⚠️ Most Missed

✅ Best Performance

Session settings & audio

🔤 Mode & Character Selection

Training Mode

Select Characters

0 characters selected

Training Parameters

Duration

2:00

1 min 5 min 10 min

Group Length (characters)

2 5 7

🎵 CW Speed & Audio Settings

CW Speed Settings

Character Speed (WPM)

5 WPM 30 WPM 60 WPM

Effective Speed (WPM) - Farnsworth

Same

Same 15 WPM 35 WPM

Extra spacing between words when lower than character speed

Audio Settings

Pitch (Hz)

600

400 Hz 650 Hz 900 Hz

Volume

60%

10% 50% 100%

Signal & Noise

Audio Filter (Hz)

700

QRM Interference