Hello, Donna -
I hope I am correct in thinking you do not have the user's manual for the clock. If so, you can find a PDF document of the manual (free) here:
http://office.manualsonline.com/manuals/mfg/la_crosse_technology/513149.html
You will need Adobe Reader software to open the PDF document, download it, save it to a file in your Documents folder (I suggest you name the saved file something like LaCross Atomic Clock Manual), and print it for easy reference.
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