Morse code listening practice for ear copy
Hit Play, hear a group, type it before the next one. Open-ended copy drills; for Koch unlocks use the trainer. Misses stack locally so you can drill the letters that keep tripping you.
When to use
Warming up before a longer trainer session; drilling a letter or digit pool; practicing head-copy tempo without sending; reviewing a miss list after a hard set.
Better elsewhere
Koch unlocks → trainer. Sending → keyer. One-off conversion → translator.
Assumptions
Letter pool by default, adjustable group length, Char WPM and Farnsworth. Audio still needs a user gesture to start. Scoring is case-insensitive against the expected group.
Examples
Input
Pool A–Z · groups of 5 · Farnsworth gaps
Result
Type five letters per burst
Input
Hide characters while you copy
Result
Forces ear copy instead of reading a cheat sheet
Input
Digits-focused groups of 3 · 18 WPM
Result
Warm up contest-style number groups
Digits live on the punctuation chart if you need a visual peek between drills.
How it works
- Engine picks random groups from your pool and schedules tones via the shared timing table.
- You type what you heard; compare case-insensitively to the expected string.
- Misses can stack locally so you know which letters keep biting.
- Hide characters when you notice yourself reading instead of listening.
Random groups from pool · tones @ Char WPM · gaps toward Farnsworth WPM · local miss list
Gotchas
- Looking at an on-screen Morse chart while “listening” trains your eyes, not your ears.
- Equal letter frequency in drills ≠ on-air English letter frequency — useful for skill, misleading for “I should know E more than Z.”
- Headphones help; laptop speakers in a noisy room blur dit vs dah.
- Prosign patterns live on the prosigns page — this pool is letters/digits practice.
Compare
How to use a listening session
- Hide on-screen characters if you catch yourself reading instead of hearing.
- Start with shorter groups; lengthen only when accuracy stays high.
- Use headphones in noisy rooms — laptop speakers blur dit vs dah.
- Misses are the curriculum: drill the letters that trip you.
Related tools
Koch unlock ladder: trainer. Sending coach: keyer. Tones are synthesized locally — no mic recording.
Pool ideas
Letters only for head-copy tempo. Digits when you want contest-style groups. Random equal frequency is fine for drills even though real English letter rates differ.
Common questions
Short answers from real friction points.
Related tools
Practice tool only. See Methodology and Terms.