I have four 15 year old Junghans Mega clocks through out the house. Ten days ago I noticed one of them dead. Battery, and by the look of the battery dead at least a month. I inserted a new battery and it did set. I did not watch it but today I went with one of them through the house and all are exact within a second. Even advance the second as close as I am able to observe. I am confident they synch daily. Bert Kehren In a message dated 6/13/2013 2:08:32 P.M. Eastern Daylight Time, paulsw...@gmail.com writes:
Burt what you mention was indeed correct. But that non psk time was stopped about a month ago. Its pure PSK now as far as I know On Thu, Jun 13, 2013 at 1:08 PM, Burt I. Weiner <b...@att.net> wrote: > Paul, > > Thanks for the information. Late last night I did a search and found out > about the "d-pskr-r" - an appropriate name, indeed. I gather there is no > final design that says, "Here, build this and it'll work". I have a malady > that I suspect is common in this group; I hate to throw anything away or > convert it to a door stop. > > Supposedly, WWVB reverts back to the non-psk mode twice a day, at 12:00 > Noon and again at 12:00 Midnight, each time for 30 minutes. Last night my > 8170 did not set. At my location the signal has been the most stable during > the day, so I'm going to watch it today at noon. I'll report my useless > findings afterwards. If it were to set once every 24 hours I would probably > be happy as I'm not using it to time a network, just to hopefully be a > little more accurate than my 30 year old kitchen clock. > > By the way... Earlier I mentioned that I have two 9150-52054 GPS units. > Apparently my mind and fingers were not speaking to each other at that > moment as I have should've typed, (DATUM) 9390-52054. Both of these run > 24/7, use separate antennas and are on a UPS. I'm sure you've seen my > various epistles in this group about them. Since I've changed out their > power supplies and upgraded their crystal oscillators, they're most happy. > > Burt, K6OQK > www.biwa.cc > > > > Burt search time nuts its all there. Its not a kit by any means. >> Spectracom did a very good job. To good, though in reality they simply >> reused the phase tracking rcvr from other units. Essentially the system >> locks to the stable carrier creating a local replica and then removes the >> carrier recovering just the AM. Or think of it as subtracting the carrier >> leaving just the data. Very good design very bad for PSK, since the >> carrier >> no longer has a relationship. >> Nist and spectracom did put notices and such out for over a year, so what >> can you say. Though we all have lots of strong opinions actually. Don't >> want >> to start that thread again. >> I have often thought and will spend no time doing it. Simply replace the >> demod with a diode detector. Now its not actually quite that easy. But if >> the only thing I had was a 8170 what the heck. The schematics of the >> system >> are available at spectracom. >> >> Near as I can tell the 8170 would run about 2 days on a fix. >> >> Off to seriously sleazzy land. You could always bugger a gps clock into >> the >> system adapting GPS time to local time by a micro. But that really is >> ugly. >> Though you end up with those nice clock digits working again. Hey when you >> do that send me the old rcvr parts. ;-) >> >> Regards >> Paul. >> >> >> On Thu, Jun 13, 2013 at 12:37 AM, Burt I. Weiner <b...@att.net> wrote: >> >> > Paul, >> > >> > Ummmm... What a revolting development this is. My 9150-52054 have a >> > smaller readout out that I can't see without climbing up on my bench, >> > so I suppose I will no longer know what time it is. >> > > Burt I. Weiner Associates > Broadcast Technical Services > Glendale, California U.S.A. > b...@att.net > www.biwa.cc > K6OQK > ______________________________**_________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts> > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.