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The Elgin Service Bulletin on Receiving Time by Wireless

This is, I think, the fifth in a series of at least six service bulletin that Elgin published between ca 1910 and ca 1915. I have two different versions of this bulletin. The only difference that I can see is that one lacks the "Arlington Receiving Set" diagram.

Like the rest of these early Elgin Service Bulletins, there isn't a date on this one, but Thomas White of the United States Early Radio History website was able to narrow it down to 1915 +/- 2 years. The Arglington station (NAA) started transmitting time signals in early 1913 and in April 1917 the US entered WWI and banned civilian use of radio. One other station mentioned in this bulletin (WCC) was decommissioned during the war, so this document must have been pre-WWI.

There are several webpages on the United States Early Radio History website that are closely related to watches:
Regulating 10,000 Clocks By Wireless   (1913)
Wireless Time Service From Beloit College   (1913)
Getting the Wireless on Board Train   (1914)

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While I'm not an expert, I believe the information on this page is correct. Please send suggestions and corrections to the webmaster.
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