[email protected] said: > I'm trying to determine the first product that could automatically decode > and display a digital time code. Digital time codes were added to WWV in > 1960 and WWVB in 1965. This was before they were added to any satellite > signals, or before they were added to LF stations in Europe, such as DCF77. > Telegraphic time codes, of course, were around much earlier.
Interesting question... In roughly the late 1950s, I got a tour of Niagara Mohawk's control room. That was arranged by RAGS (Radio Amateurs of Greater Syracuse). Niagara Mohawk was/is the local power company for central NY state Wikipedia says they have been borged by National Grid. http://en.wikipedia.org/wiki/Niagara_Mohawk I remember a pair of clocks (digital, I think) on the wall. I wasn't enough of a time-nut (yet) to check out the details. I'm pretty sure it was the obvious PLL, perhaps with a human in the loop. Unfortunately, I don't remember where the reference clock came from. Of course, maybe my memory is bogus. I'm pretty sure that there was something time-nut related going on. I'm petty sure that the idea of locking on to a reference clock seemed like a good one, even if I didn't know what a PLL was back then. -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
