Sharp Atomic Clock Spc373 User Manual [ CERTIFIED × SOLUTION ]
The Sharp Digital Atomic Clock (SPC373) is a self-setting, battery-operated device featuring a high-contrast display for time, date, and temperature, with essential setup instructions printed on the back. It synchronizes via the WWVB radio signal, requiring an initial setup of the remote sensor to channel 1, followed by time zone selection and overnight calibration. For the complete setup guide, refer to the Sharp Atomic Clock Manual Sharp Atomic Clock Manual
Step-by-Step: Manual Setup (Pre-Sync)
While the clock will set itself automatically, you must input your Time Zone and Daylight Saving Time preference manually. sharp atomic clock spc373 user manual
Up: Increases values during setup; hold for 3 seconds to manually force a radio signal (RC) reception test. The Sharp Digital Atomic Clock (SPC373) is a
The icon stopped flickering. The clock displayed 12:00 AM—the signal was dead. Cause: Signal obstruction (metal roofs, stucco with wire
Understanding the Display & Buttons
The SPC373 typically features 4-5 buttons on the back or top edge: SET, ▲/CH, ▼/MEM, SNOOZE/LIGHT, and WAVE/RESET.
The Year will flash. Use the UP/DOWN buttons to adjust, then press SET. Repeat this process for Month, Date, Hour, and Minute.
5. Troubleshooting Common Issues
Problem: Clock never sets itself after 24 hours
- Cause: Signal obstruction (metal roofs, stucco with wire mesh, basement locations).
- Solution: Move clock to a different room, away from routers, power supplies, or large appliances. Try placing on a metal surface (acts as a ground plane). For persistent failure, use manual set (see Section 6).


