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Aldo is a morse code learning tool which provides four type of training methods: blocks, koch, file, callsign. Blocks: Identify blocks of random characters played in morse code. Koch: Two morse characters will be played at full speed (20wpm) until you'll be able to identify at least 90 percent of them. After that, one more character will be added, and so on. File: Identify played characters generated from a file. Callsign: Identify random callsigns played in morse code.
morse-x offers you a window to put dits and daws into - by pressing any key (except q = quit). On the console it prints each character you morsed in. (So start it in an x-terminal-emulator.) On the first execution you have to calibrate the length of dits and daws, so just follow the instructions on the console.

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