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TwentyninthDigitOfPi t1_iuc9jbn wrote

How does the sender figure out the receiver's top efficient speed? Is there some sort of "hey slow down" or "go faster if able" code (formal or informal)?

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teh_maxh t1_iucndsc wrote

QRS to slow down, QRQ to speed up.

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Canadian_Guy_NS t1_iuf6g89 wrote

absolutely, if I was on a duplex circuit (two freqs) the receiver would send a dah, for every word received correctly, and if he wanted it resent, then send a ditdit.

People are lazy, so didn't really have to use Q codes in that situation, you just increased your send speed until either you weren't comfortable, or the receiver started asking for lots of repeats.

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