• Try rotating it 90 degrees. The antennas are directional and you might be able to improve the signal strength by turning the antenna.
• Place the clock or receiver along a wall or near a window that faces Fort Collins, Colorado.
• Locate the clock or receiver at least 1 or 2 meters away from any computer monitors, which can cause interference (some monitors have a scan frequency at or near the WWVB carrier frequency of 60 kHz).
• You are not in range of the broadcast, check the coverage map.
• Your clock uses batteries, check them and replace if necessary.
• If nothing else works, take the clock outdoors at night and power it down (remove the batteries or unplug it), then power it up again to force it to look for the WWVB signal. If it works outdoors but not indoors, you probably have a local interference problem inside your house or building. If it doesn’t work outdoors at night, its probably best to return it and try a different model.

If you live in an area that does not observe Daylight Saving Time (Arizona, Hawaii, parts of Indiana), make sure that DST is disabled on your radio-controlled clock. Not all clocks have this feature, so you might have to select another time zone to make your clock display the correct time when DST is in effect.

Some radio-controlled clocks only allow you to select four different time zones (Pacific, Mountain, Central, and Eastern). Some clocks allow you to select any time zone, even those time zones that are outside the coverage area. When purchasing a clock, make sure that it can handle your time zone. For example, we’ve heard from a few users who purchased clocks in Hawaii but can’t select the Hawaiian Time Zone.

Reception Problems - If your clock isn’t currently receiving the signal, the time will “drift” and gradually get further and further from the correct time. Remember, if the signal isn’t being received, your clock isn’t radio-controlled any longer, it’s just a regular quartz clock.

ExactSet digital radio-controlled clocks have an indicator on the display that tells you if the signal is being received properly.  If you are not sure if the signal is being received, try powering down the clock (remove the batteries), then turn it on again to see if it can synchronize. If it doesn’t, see the tips above for improving your reception.

 

Checking your clock - There is no need to check a properly working WWVB clock, it should always display the correct time. However, you might want to check it if you suspect you have a problem. You can check your clock by using the NIST web clock, or by listening to NIST Radio Station WWV using a shortwave radio or telephone (dial 303-499-7111).

ExactSet:

ExactSet clocks have an indicator on the display that tells you if the signal is being received properly.  If you are not sure if the signal is being received, try powering down the clock (remove the batteries), then turn it on again to see if it can synchronize. If it doesn’t, see the tips above for improving your reception.

Uncheck the "Automatically adjust clock for daylight saving changes" under the time zone tab of the Windows Date/Time control panel applet.

ExactSet:

You should change your time zone setting during DST to make your clock display the correct time