Tom Copied by machine onto tape, then passed slowly in front of a typist who read the ups and downs and typed from that. My father did this in the 30's from recordings at >100wpm to his typing speed of about 30wpm. I've seen the machines in the Poldu museum but they can't demonstrate them because they are running out of tape!
David G3UNA > Who the heck is copying that and what are they copying??? > > The highest speed record for a long time, of copying unexpected text, was > only around 70-80 WPM. That record held the whole time I was growing up, > and it was from the 30's I think. > > It is certainly impossible to copy 300 WPM without decoding. > > I have some nagging questions about these speed claims. > > W8JI > > > >> This is a *little* OT, but I've just read in a 1914 WT book that they >> were >> regularly running at 300wpm on spark transmitters. The very clever trick >> was to operate the spark continuously and FSK it by switching between >> taps >> in the antenna tank. The receivers were direct conversion using rotary >> generators on nominal freq then recording the difference on a pen >> recorder - >> I suppose an undulator by another name. I don't think FSK and DC were >> phrases in common use at the time. Astonishing. >> >> David >> G3UNA >> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
