This is almost always a setting issue. Refer to Section 2 to ensure you have selected the correct zone (P, M, C, or E). The atomic icon is missing or flashing.
Keep the clock at least 3-6 feet away from computers, TVs, or microwaves, as electronic interference can block the signal. 6. Troubleshooting Common Issues The time is off by exactly one or more hours. sharp atomic clock spc373 user manual
The clock attempts to sync every night at midnight. If it fails, it will try again an hour later. If it hasn't synced in days, try moving it to a different wall or closer to a window. The display is fading. This is almost always a setting issue
The Sharp SPC373 Atomic Desktop Clock is a popular choice for those who want "set it and forget it" accuracy. Because it syncs with the National Institute of Standards and Technology (NIST) radio signal in Fort Collins, Colorado, it maintains split-second precision. Keep the clock at least 3-6 feet away
A tower icon with waves indicates the clock is receiving the signal.
The signal is strongest at night. Place the clock near a window facing Colorado for the best results.
If you live in an area with poor signal reception, you may need to set the clock manually: Press and hold the button for 3 seconds.