by OK5VAS

CW receive trainer

Ready

RX practice

Koch drills for on-air copy. Hear a character, tap what you copied, keep moving.

Lesson01 / K M
Character20 WPM
Effective15 WPM
Tone650 Hz
LOCAL PROGRESSNO SIGN-INNO TELEMETRY

New sound

Meet the character K

Hear the rhythm as one sound. Don’t picture dots and dashes.

Copy practice

What do you hear?

—accuracy
Ready 3 groups of 5 characters
Your answers 0 / 15
Progress to the next character 0 / 50 answers

How it works

Sound first. One character at a time.

  1. 1Listen at full character speedEvery character sounds like real on-air CW from day one.
  2. 2Tap what you hearA new block follows every 15 characters. “Not sure” keeps you in sync.
  3. 3Unlock the next soundAfter 50 answers at 90% accuracy, one new character is added.

Sound settings

Tune your practice

Start over from scratch Deletes lessons, statistics, and custom settings.

Irreversible action

Reset all your progress?

You’ll return to the first K/M lesson. Results, practice time, and sound settings stored in this browser will be deleted.