The DX Engineering Logo UltrAtomic® Wall Clock features dramatically improved reception and reliability, allowing you to automatically set and keep time, even at daylight saving time changes.
Excellent readability and attractive styling make this DX Engineering 14-inch analog clock a great addition to any amateur radio station, office complex, school, or home.
The UltrAtomic receives the enhanced phase modulated WWVB broadcast signal introduced by the National Institute of Standards and Technology (NIST) in 2012. This advanced technology allows the radio time signal to “break through” barriers like cement walls, unlike previous PWM-only atomic clocks.
WWVB is a time signal radio station near Fort Collins, Colorado. It is co-located with WWV, a time signal station established in 1919 that broadcasts in both voice and time code on different shortwave frequencies. You can read a brief history of ham radio and WWV, WWVH, and WWVB in this OnAllbands article by Mark, K8MSH.
A Clock Loaded with Features
This is the DX Engineering version of the La Crosse Technology wall clock that was the first on the market to be based on this enhanced broadcast. The UltrAtomic clock operates even in the harshest conditions, such as when the signal-to-noise ratio interferes with radio-controlled clock reception using the legacy AM signal broadcast.
UltrAtomic technology digitally processes the received signal via an integrated circuit within the clock. It leverages the advanced modulation scheme and new data encoding. The reception reliability of the technology has been validated in the most challenging locations and scenarios and has been demonstrated successfully throughout North America.
The clock lets you select any time zone with a custom setting, especially UTC/GMT. Now you can enjoy UltrAtomic accuracy while viewing any time zone around the world.
The phase modulated WWVB broadcast includes a notification for daylight saving time transitions well ahead of when they occur. The clock reads and stores this information and, at the appropriate instance, automatically advances the hands one hour in the spring and eleven hours in the fall (to move back one hour), even if the signal is not received on the day of the transition.
Other features include:
- UltrAtomic time with manual set option
- Barrier-resistant signal reception with dual antenna that is insensitive to orientation
- Adjustable time and zone (24-hour World Time)
- Eco Mode extends battery life—turns second hand off from 11 pm to 5 am
- Q-Mode (Quartz Mode) for manual time setting
- Stainless steel frame bezel
- Glass lens
- Black metal hands and black numerals on white background
- Low-battery detection indicator
- Powered by two or four high-quality “C” LR14 batteries (not included) for up to three years or six years in Eco Mode
