They do have a web site, but I couldn't find anything about frequency transmission. You can google WWV and it gives you the site(s) Terry Beckingham At 09:28 AM 1/21/2011 -0800, you wrote: >On 1/21/2011 7:06 AM, Robert Scott wrote: >> >>The only A440 I know of that is guaranteed to be accurate is the one on >>shortwave radio station WWV and available over the phone by calling >>303-499-7111 in Colorado. But keep in mind this 440 Hz tone is only >>available for 45 seconds each hour, starting at exactly 2 minutes after >>the hour. > >Does the Bureau of Standards have a website? They might offer a 440 sine >wave there? > >Susan
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