Just curious if this is known or not. Newer Casios including my new Ge-500a are +/-15 sec per month with no waveceptor.
Interestingly enough, my waveceptor in eastern ontaio, canada is usless no matter how much I tried I can't get it to sync. It still amazes me that it did not loose or gain second sice I had it (11 days now) last time reception sygnal was sucess in mid jan. So I'm safe to assume that it did not loose a single second in almost a month. Impressive... hence my question if it's perhaps known if Casio is doing some form or thermal compesation on their watches (in a nutshell measuring temp of the crystal to compensate for variations in "ticks" that create "one second" - this is basic source of error in all digital watches)
How accurate are you finding your Gs with no waveceptor technology?