I should have mentioned that my Casio (module 3405) is a G-Shock "diving watch" with a 20-bar (~200m depth) rating. In so far as possible, I never take it off my wrist (TSA check points being the occasional exception), and don't want any leak problems even though I never dive.
I once bought a watch rated at 20m, and it only lasted about a month before it leaked. Apparently normal living stresses are equivalent to diving to moderate to substantial depths. Dana On Mon, Jun 11, 2018 at 2:44 PM, David G. McGaw <david.g.mc...@dartmouth.edu > wrote: > I think you guys won the luck of the draw. I have had a Casio WV200DA-1AV > Wave Ceptor for a while, module 3140. Nice watch, but it gains about 1/2 > sec per day when not synchronized. I recently got a Casio GW-M5610 > G-Shock, module 3153. I have not run it unsychronized, so have not checked > its drift, but other G-Shocks have been quite good. It is the higher-end > line with tighter specs and they actually have a trimmer inside. > > David N1HAC > > > > On 6/11/18 6:30 AM, Dana Whitlow wrote: > >> I bought a Casio 'atomic watch" about 3 months ago, one which uses the >> '3405' module. >> I've also been running checks with radio setting turned off, and mine is >> coming in at >> just under 1 sec per month, based on seeing how long it takes to drift one >> second. >> >> But I find that visual/aural coordination is a poor way to do business- if >> the error is near >> zero (or an integer number of seconds), my eye/ear/brain will shift to >> make >> it look like >> it's "right on" within a few seconds even if the initial look says it's a >> little bit off. >> >> I hadn't thought of the video approach- sure wish I had a means to record >> video and >> then view it frame by frame. >> >> Dana >> >> >> On Mon, Jun 11, 2018 at 3:20 AM, Esa Heikkinen <tn1...@nic.fi> wrote: >> >> Hi! >>> >>> There seems to be some kind of comeback going on with 80's style digital >>> watches. You may find replicas of some 80's models or even re-makes of >>> the >>> original models from original manufacturer. >>> >>> So I decided to get one. As a time-nut my primary goal was to have radio >>> controlled 'atomic' model. So I ended up to Casio Wave Ceptor >>> WV-59DE-1AVEF. There's many models available from basic digital models >>> like >>> this to very nice ones with with full titanium body (analog style). But >>> because of the 80's is hot it had to be digital... >>> >>> Wave Ceptors suport all time signals formats (US, UK/German and Japan) >>> and >>> correct standard is automatically selected when home city is set. >>> >>> One of the first things to do was to test the accuracy with radio >>> syncronization turned off. Correct time was fist set with DCF77. Then I >>> switched off the synconization. After beign about three days off there >>> was >>> no significiant visible error on time. In the video we can see however >>> about one frame error, which means about 40 milliseconds. Still that's >>> pretty good result for wrist watch. Also, the syncronization will occur >>> once per day when the reception is good. >>> >>> So the watch must be at least calibrated in the factory. Don't know if >>> the >>> watch performs any kind of self-calibration according to radio >>> syncronization results, most likely not - but it would be technically >>> possible. >>> >>> So far so good, it's accurate enough - at least as new. When >>> syncronization is turned on, there should never be visible error on time. >>> >>> Here's my test video: >>> https://na01.safelinks.protection.outlook.com/?url=https%3A% >>> 2F%2Fwww.youtube.com%2Fwatch%3Fv%3D_A23buFeHd0&data=02% >>> 7C01%7Cdavid.g.mcgaw%40dartmouth.edu%7Ca8e76ed2d4b54ed75dce0 >>> 8d5cf866ee5%7C995b093648d640e5a31ebf689ec9446f%7C0%7C0%7C636 >>> 643098739784325&sdata=EH0F8vRQK0jmROrREGrD9jDMcd2JQglutxZO% >>> 2BVff7t0%3D&reserved=0 >>> >>> -- >>> 73s! >>> Esa >>> OH4KJU >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to https://na01.safelinks.protect >>> ion.outlook.com/?url=https%3A%2F%2Fwww.febo.com%2Fcgi-bin% >>> 2Fm&data=02%7C01%7Cdavid.g.mcgaw%40dartmouth.edu%7Ca8e76e >>> d2d4b54ed75dce08d5cf866ee5%7C995b093648d640e5a31ebf689ec9446 >>> f%7C0%7C0%7C636643098739784325&sdata=1oe%2FezDZCqH7LxIeCJqwc >>> CwW3wcduBUL8fB2hmcYGTg%3D&reserved=0 >>> ailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://na01.safelinks.protect >> ion.outlook.com/?url=https%3A%2F%2Fwww.febo.com%2Fcgi-bin% >> 2Fmailman%2Flistinfo%2Ftime-nuts&data=02%7C01%7Cdavid.g. >> mcgaw%40dartmouth.edu%7Ca8e76ed2d4b54ed75dce08d5cf866ee5%7C9 >> 95b093648d640e5a31ebf689ec9446f%7C0%7C0%7C636643098739784325 >> &sdata=c7UR5i3YJmWoKCBOn0PTNHsQHAQwE9BjVhouwtdJTBY%3D&reserved=0 >> and follow the instructions there. >> > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/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.