NavList:

Bruce,

Atmospheric conditions can sometimes prevent synchronization for long periods. Interference from tall buildings or mountains, electrical interference from cell phones and appliances or high tension power lines can also block the signal. The best time to get a good signal seems to be at night.

I work at night in a large metal building with lots of wireless data equipment, so I usually manually sync my watch outside on my lunch break. It almost always works, but there will be times when I just can't get a signal. Rarely, I won't get one for two maybe even three days. Having said that, I have also experienced times when the watch received a signal even when I thought it wouldn't be able to.

You said you can't find a 'reliable' spot for good reception. To be sure: has the watch successfully received the signal before?

Regards,
Sean C.
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