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🎧 Koch CW Trainer

Master the scientific Koch method for fastest Morse code learning

🎯 What is the Koch Method?

The Koch method is scientifically proven to be the fastest way to learn Morse code. Our fully functional implementation provides real-time interactive training with keyboard input, visual feedback, authentic Farnsworth timing, and comprehensive statistics integration. You learn characters one by one at full speed, mastering each before adding the next.

Koch Character Order:
K M R S U A P T L O W I N J E F 0 Y V G 5 Q 9 Z H 8 B ? 4 X C D 6 7 1 2 3 <AR> <SK> <KN> <BT>

⭐ Key Features

⌨️ Interactive Training

  • Real-time keyboard input: Type as you hear
  • Visual feedback: Green=correct, Red=wrong, Blue=missed
  • Speed-adaptive timing: Response time scales with WPM
  • Prosign support: Ctrl+A/S/K/B shortcuts
  • Clean interface: No distracting popups during training

⚡ Authentic Farnsworth Timing

  • Character Speed: Transmission speed (5-40 WPM)
  • Effective Speed: Overall pace (4-40 WPM)
  • Mathematical precision: 1 WPM = 6 seconds per word
  • Industry standard: Professional CW timing
  • Speed pressure: Higher speeds = faster response

🎛️ Training Settings

  • Session Length: 5-30 minutes (default: 5 min)
  • Character Count: 2-10 characters to practice
  • Audio Frequency: 400-800 Hz (default: 600 Hz)
  • Volume Control: Browser-based adjustable levels
  • Settings persistence: Saved across sessions

📊 Comprehensive Statistics

  • Session summaries: Detailed post-session statistics
  • Character mastery: Individual accuracy tracking
  • Statistics integration: Appears in main statistics page
  • Performance metrics: Streaks, accuracy, speed
  • Progress persistence: Resume where you left off

🚀 How to Use Koch Trainer

📋 Step-by-Step Instructions

  1. Click "Start KOCH Method" from main menu
  2. Review help modal: First-time users see interactive tutorial
  3. Adjust settings: Character/Effective speed, frequency, session length
  4. Start training: Listen to characters and type what you hear
  5. Watch feedback: Match Status shows ✓ CORRECT, ✗ WRONG, ○ MISSED
  6. Complete sessions: Beautiful statistics appear with close button
  7. Track progress: View improvement in Statistics page

🔬 Advanced Koch Features

  • Automatic Progress Tracking: Your position in the Koch sequence is saved automatically
  • Character Mastery Display: Visual grid shows your progress through all 43 characters
  • Real-time Accuracy: Instant feedback on your typing accuracy
  • Session Statistics: Track streaks, session time, and overall performance
  • Farnsworth Timing: Characters sent at full speed, spacing adjusted for learning
  • Progress Persistence: Resume exactly where you left off between sessions

⌨️ Prosign Input & Special Characters

🚨 Important: How to Input Prosigns

Prosigns like SK, KN, AR, and BT don't have direct keyboard equivalents. The Koch trainer handles these through special Ctrl key combinations to avoid input errors.

Keyboard Shortcuts:
Ctrl+A = AR (End of message)
Ctrl+S = SK (End of contact)
Ctrl+K = KN (Go ahead specific)
Ctrl+B = BT (Break/pause)
Morse Patterns:
AR: .–.–. (di-dah-di-dah)
SK: ...–.– (di-di-dit-dah-dit)
KN: –.–. (dah-di-dah-dit)
BT: –...– (dah-di-di-dit-dah)

❌ Common Mistake

Don't try to type "SK" or "KN" directly! This will result in errors. When you hear a prosign in Morse code, use the corresponding Ctrl combination. For example, when you hear ...–.– (SK), press Ctrl+S, not the letters S and K.

📍 Prosign Learning Sequence

Prosigns appear at the very end of the Koch sequence (characters 38-41 out of 41 total):

Characters 1-37:
K M R S U A P T L O W I N J E F 0 Y V G 5 Q 9 Z H 8 B ? 4 X C D 6 7 1 2 3
Characters 38-41 (Prosigns):
<AR> <SK> <KN> <BT>

You'll encounter prosigns only after mastering all letters, numbers, and punctuation marks.

💡 Learning Tips & Best Practices

🎯 Learning Strategy

  • Don't count dits/dahs: Learn the sound pattern
  • Focus on rhythm: Each character has a unique beat
  • Practice daily: 15-20 minutes is better than long sessions
  • Be patient: Master each character before advancing
  • Use headphones: Better audio quality aids learning

⚙️ Settings Recommendations

  • Beginners: 18 WPM character, 5 WPM effective
  • Character speed: Never go below 15 WPM
  • Session length: Start with 5 minutes
  • Character count: Begin with 2-3 characters
  • Frequency: 600 Hz is most comfortable for most
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