[time-nuts] Re: WWVB Daylight savings

[Shawn]

I'm going to echo Larry's comments.  My clocks are all the older AM
type, there are 8 of them around the premises plus two Casio WWVB
watches.  All of which missed the DST change Sunday morning.  Several
picked things up Monday morning, two are still not syncing, lets see
how it goes tonight.  They all are fairly reliable on the daily updates
but seem to consistantly miss the DST changes, both directions,
resuming withing a few days to a week or so after the fact.  Just seems
strange as I didn't think there was that big a difference, even on the
AM side, during the transition to/from DST.

Shawn


On Mon, 2021-03-15 at 11:49 -0700, Larry McDavid wrote:
> All three WWVB AM clocks I moved into my garage overnight did set to
> DST 
> correctly overnight and I have moved them back into the house.
> 
> The house now has radiant thermal barrier thermal insulation under
> the 
> roof in the attic; this insulation has aluminum foil applied to one 
> paper surface. When I had this additional insulation installed, the
> WWVB 
> AM clocks throughout the house stopped setting time overnight until
> I 
> moved them to the inside of outside walls; now, they all seem to set 
> time but not necessarily the DST change for some reason. The garage
> does 
> not have this insulation so the WWVB signal is stronger out there.
> 
> I do wonder why these AM clocks will set time-of-day but not change
> with 
> DST. But, that is always the case; some of the clocks do and some
> don't 
> but it is not always the same clocks that don't. Applying the DST 
> correction is just inconsistent.
> 
> The new insulation also reduced the GPS signal inside my home 
> substantially. I have two timing GPS antennas on the roof and two
> GPS 
> antenna splitters so I can distribute the GPS signal; one supplies
> GPS 
> upstairs and one downstairs. But, if I bring the car GPS navigator 
> inside to update its software, it does not consistently get a GPS
> signal 
> now with the new insulation.
> 
> The new La Crosse Ultratomic BPSK clocks will set anywhere inside my 
> home within 10 minutes (usually much less) any time of day when the 
> C-cells are replaced. It is reported that the BPSK "signal strength" 
> (actually modulation decoding) is 100 times that of the AM
> modulation. I 
> wish there were more kinds of BPSK clocks available!
> 
> Is anyone aware of any other BPSK WWVB clock?
> 
> Larry
> 
> 
> On 3/14/2021 9:20 PM, David I. Emery wrote:
> > On Sun, Mar 14, 2021 at 07:43:03PM -0700, lmcdavid wrote:
> > 
> > > I have 3 WWVB AM clocks that did not update DST overnight last
> > > night
> > > but one that did and two BPSK clocks that did. Par for the
> > > course. The
> > > BPSK clocks always set correctly within 10 minutes any time of
> > > day.I
> > 
> > 	My 4 BPSK clocks updated just exactly as they are supposed
> > to - my wife was most amused to watch the process at 2 AM on the
> > one
> > in her sewing room/home office.  She actually asked to be woken up
> > to see it.
> > 
> > 	I'm pretty sure the SW in the clock needs only to get a valid
> > message about the pending change time some point in advance ... but
> > those BPSK clocks work well in the Boston suburbs, which is not
> > exactly
> > strong WWVB 60 KHz territory... though they are in a wood frame
> > house and a
> > brick hospital office... not particularly magnetically shielded
> > either
> > place.
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > > -------- Original message --------From: lstoskopf at cox.net Date:
> > > 3/14/21  7:23 PM  (GMT-08:00) To: time-nuts at lists.febo.com
> > > Subject: [time-nuts] WWVB Daylight savings Strange, here in KS one of my 60 kHz clocks didn't update.?? I'll give it a few days and not blame the update.?? N0UU_______________________________________________time-nuts mailing list -- time-nuts at lists.febo.com -- To unsubscribe send an email to 
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