Re: [time-nuts] 10811 unsoldered fuse
On 10/19/2015 1:31 PM, Dimitri.p wrote: How common is it to find undetected missing solder on 10811 parts after all these years? Depending how hot the unit has been, and for how long, the solder may have slowly flowed off the connection. Check if there is any blobs of solder rolling around the case. Dimitri ___ 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.
Re: [time-nuts] 10811 unsoldered fuse
That's not missing, that's something that happened after it left the factory. Look at the coloration of the traces near that joint, and the solder residue on the lead. Look at the cold looking solder joint on the toroid next to the black wires. Look at all of the solder splash. I would say that board has been worked on by a technician... and not a very proud one at that. -Chuck Harris Dimitri.p wrote: How common is it to find undetected missing solder on 10811 parts after all these years? Dimitri ___ 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.
Re: [time-nuts] [Bulk] 10811 unsoldered fuse
Dimitri, That clearly is not the 'original' thermal fuse that I found in my 10811. Mine was a small, axial lead, cylindrical part. It looks like someone substituted a different part (is that a fuse or a cutoff?) and did a poor job soldering. I think the temperature is correct though. I'd have to look at the manual to know for sure. My 'fuse' failed and I replaced it. All the soldering was OK on my unit. Joe -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Dimitri.p Sent: Monday, October 19, 2015 2:32 PM To: time-nuts@febo.com Subject: [Bulk] [time-nuts] 10811 unsoldered fuse How common is it to find undetected missing solder on 10811 parts after all these years? Dimitri ___ 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.
Re: [time-nuts] 10811 unsoldered fuse
The thermal fuse plugs into pin sockets. It cannot be soldered for the obvious reason that the solder would melt it...at 109 degrees as it is marked. My suggestion would be to jumper it out of the circuit. Rick Karlquist N6RK On 10/19/2015 12:31 PM, Dimitri.p wrote: How common is it to find undetected missing solder on 10811 parts after all these years? Dimitri ___ 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.
Re: [time-nuts] How did they distribute time in the old days?
I heard of a system used in Melbourne between two major stations using pulses in a pipe of water to sync. I suppose that pulses travel much faster in water being incompressible, so better accuracy! Tom Harris On 20 October 2015 at 07:00, Brian Inglis wrote: > On 2015-10-15 08:32, Tom Van Baak wrote: > >> Nick Sayer writes: >> >>> The WU standard time service goes back further than the turn of the 20th >>> century. It started in 1870. >>> >> > Also, for a screen full of irresistible SWCC photos, try this: >> https://www.google.com/search?tbm=isch&q=self-winding+clock+company >> >> My understanding (perhaps incorrect) was that the sync pulse was once >>> daily and, as you said, >>> would cause the hands to “snap” to 12. The trailing edge of the pulse >>> was synchronized and would >>> release the clock to operate normally. >>> >>> That they had something as accurate and widespread as it was so early is >>> astonishing. >>> >> >> Oh, Padawan, that's just the tip of the iceberg when it comes to the deep >> and fascinating history of precise timekeeping. >> > > Recently restored (after a building fire where some were lost) to working > 19 Art Nouveau master/slave clocks from 1910: > http://www.gsaarchives.net/2013/04/mackintosh-clocks-feature-on-bbc-news/ > more pictures in linked articles from BBC > -- > Take care. Thanks, Brian Inglis > ___ > 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.
[time-nuts] "Selective availability" af accurate time for Apple users?
Last spring (late March/early April) it was noted on this list that iPhone clock accuracy had improved significantly with the release of iOS 8.2. As measured by NTP apps such as Emerald Time and Watchville, millisecond accuracy comparable to the soon-to-be-released Apple Watch was now commonplace, with typical offsets of 5 ms or less, rather than the several seconds of offset typical under the previous release. Now, with the latest version, iOS 9, the Apple Watch level accuracy previously available to iPhone users has gone away. Once again, your iPhone will be as much as several seconds slow as measured by NTP, unless you force an update to the phone’s clock by opening a GPS app. It seems that Apple is aware of how they were giving their highest available accuracy continuously to “mere” iPhone users, and though it cost them nothing to make it available to all, they want to make sure that if you are a _real_ time-nut, you’ll buy an Apple Watch. Has anybody else observed this with their iPhone since “upgrading” to iOS 9? Anyone know of any difference in the reference time ( e.g. GPS vs. network time) that Apple is using to “dumb down’ their smartphones in favor of Apple Watch? Brian Garrett ___ 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.
Re: [time-nuts] 10811 unsoldered fuse
As I recall, the thermal fuse in the 10811 is not soldered in but it is socketed. Regards - Mike Mike B. Feher, EOZ Inc. 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 office 908-902-3831 cell -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Dimitri.p Sent: Monday, October 19, 2015 3:32 PM To: time-nuts@febo.com Subject: [time-nuts] 10811 unsoldered fuse How common is it to find undetected missing solder on 10811 parts after all these years? Dimitri ___ 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] 10811 unsoldered fuse
The fuses in the 10811 are NOT soldered in. The leads are inserted into single pin "sockets" Cheers! Corby ___ 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.
Re: [time-nuts] 10811 unsoldered fuse
On 10/19/2015 11:51 PM, Richard (Rick) Karlquist wrote: The thermal fuse plugs into pin sockets. It cannot be soldered for the obvious reason that the solder would melt it...at 109 degrees as it is marked. My suggestion would be to jumper it out of the circuit. However, if you'd rather have some small degree of protection against meltdown due to the thermistor failing open, a good replacement which fits is available for less than $1 from Digikey: EYP-1BF115. This was discussed about a year ago at some length. Dan ___ 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.
Re: [time-nuts] "Selective availability" af accurate time for Apple users?
garrettbrian1...@gmail.com said: > Has anybody else observed this with their iPhone since âupgradingâ to iOS > 9? > Anyone know of any difference in the reference time ( e.g. GPS vs. network > time) that Apple is using to âdumb downâ their smartphones in favor of > Apple > Watch? Is there any difference in battery life? GPS uses a lot of power. They may have done something like improved the battery life by not using GPS as much with a side effect of not getting the time as often. -- These are my opinions. I hate spam. ___ 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.
Re: [time-nuts] "Selective availability" af accurate time for Apple users?
On Tue, Oct 20, 2015 at 4:02 AM, Brian Garrett wrote: > ... As measured by NTP apps such as Emerald Time and Watchville, millisecond accuracy comparable to the soon-to-be-released Apple Watch was now commonplace, with typical offsets of 5 ms or less, rather than the several seconds of offset typical under the previous release. Network connected iOS devices not paired with a watch use (s)ntp at large intervals rather than the mobile network or GPS. The offsets appear to be somewhat random -- both positive and negative, large (s) and small (ms). I assume it's related to the environment and the last time the offset was corrected. > Now, with the latest version, iOS 9, the Apple Watch level accuracy previously available to iPhone users has gone away. Once again, your iPhone will be as much as several seconds slow as measured by NTP, unless you force an update to the phone’s clock by opening a GPS app. I checked on an iPad (but presumably that shouldn't matter). My current offset is -1.6 s (fast, and slowly increasing) as measured by Time independent of GPS which I woke with Observatory which uses both NTP (for time) and the GPS (for location). Restarting the iPad causes a step. This compares with +1 to -3 ms on my phone. I'll admit the above is slightly speculative because I haven't checked network traffic yet but I will shortly. ___ 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.
Re: [time-nuts] 10811 unsoldered fuse
From the top side of the board I couldnt' tell if what looks like an unsoldered joint was supposed to be a single pin, so I soldered the leads and have been enjoying it working. If it acts up again I'll take it further apart to see what's on the other side. Thanks for all the replies. Dimitri ___ 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.
