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Anecdotally, I clicked the article, read nothing, and immediately listened to the first sound clip where I was able to make-out that it represented "CQ", but to
by nickysielicki 3y ago
Anecdotally, I clicked the article, read nothing, and immediately listened to the first sound clip where I was able to make-out that it represented "CQ", but to be fair I'm a ham and "CQ" is by-far the most common morse code message.
All you need is a ternary system where there is dit, dah, and silence. Even just tapping on different parts of the "wall" can serve this purpose, so long as it is able to be differentiated.
- Johnythree 3y agoThe whole point of the article is that there is no need for differentiation. eg just click/click is sufficient. There are two clicks for each element, and what changes is the space between the clicks. eg it's the rhythm which defines the character. It operates in exactly the same way as the armature in a telegraph sounder.
- nickysielicki 3y agoI disagree, the stated point the author is making is that I shouldn't be able to interpret the first clip. Edit: Okay, I see your point, reading your other comment. Yes, it's the case that you do not even need dit/dah/silence, you can get away with just 'dit' and silence, provided you're consistent with your timing.
- hilbert42 3y agoCQ is instantly recognizable to us, so is SOS even though most of us have never heard over the air. SOS of course would be recognizable to almost anyone whereas CQ requires at least some Morse training.