For a digital copy of the official Sharp SPC373 user manual (PDF), visit Sharp’s support portal and search model "SPC373." Keep this article bookmarked for quick troubleshooting. This guide is a community-created manual for educational purposes. Sharp Electronics specifications are subject to change. Always verify with official documentation.
On the first night, place the clock directly next to a west-facing window (toward Colorado) and turn off all Wi-Fi routers and phone chargers within 6 feet. By morning, the tower icon should be solid and your time will be perfect to the second. sharp atomic clock spc373 user manual
Note: Sharp Electronics produces various clock models. While this guide is specifically tailored for the SPC373 (often sold as a wall clock or large display desk clock with temperature/humidity), the instructions are based on common Atomic Clock protocols. Always keep your original product sheet for specific warranty information. Introduction to the Sharp SPC373 The Sharp Atomic Clock SPC373 is a precision timekeeping device designed to automatically synchronize with the official U.S. Atomic Clock in Fort Collins, Colorado (WWVB radio signal). Unlike standard quartz clocks that drift by seconds per month, the SPC373 maintains accuracy to within one second over millions of years. For a digital copy of the official Sharp
A: The US changed DST laws in 2007. If your SPC373 is a very early model, it may follow the old schedule. Check Sharp’s website for a firmware update (rare) or set DST to OFF and adjust manually twice a year. Always verify with official documentation