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 Post subject: Testing the new Listening Tubes
PostPosted: Thu Jan 10, 2019 10:11 pm 
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Victor VI
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"Can you hear me now...?"


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Listening Tubes.jpg
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"The phonograph† is not of any commercial value."
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 Post subject: Re: Testing the new Listening Tubes
PostPosted: Fri Jan 11, 2019 5:59 pm 
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Victor IV
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Ooh, stereo!


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 Post subject: Re: Testing the new Listening Tubes
PostPosted: Fri Jan 11, 2019 8:09 pm 
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Victor VI
Joined: Tue Mar 23, 2010 7:00 pm
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Location: Western, WA State
Where did these come from. It looks military equipment to me.
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 Post subject: Re: Testing the new Listening Tubes
PostPosted: Sun Jan 13, 2019 1:03 am 
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Victor II
Joined: Thu Dec 26, 2013 7:20 pm
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Location: Winfield,Mo
Anti aircraft listening post?


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 Post subject: Re: Testing the new Listening Tubes
PostPosted: Sun Jan 13, 2019 10:25 am 
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Victor IV
Joined: Wed Jan 07, 2009 11:07 pm
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What is the source of the image? The building in the background looks an awful lot like the National War College at Fort Lesley McNair in Washington, D.C.

Best,

Garret


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 Post subject: Re: Testing the new Listening Tubes
PostPosted: Sun Jan 13, 2019 10:34 am 
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Victor IV
Joined: Mon May 13, 2013 2:04 pm
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probably military , they used concrete in the 1st World war to detect Zeppelins in the Uk !
https://www.bbc.co.uk/news/in-pictures-46348917


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 Post subject: Re: Testing the new Listening Tubes
PostPosted: Sun Jan 13, 2019 1:47 pm 
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Victor Jr
Joined: Thu Sep 21, 2017 12:19 pm
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The photo appears to have been taken at Bolling Field in Washington, D.C. The building in the background is indeed the United States Army War College at Washington Barracks (now Fort Lesley J. McNair). The Anacostia River (Eastern Branch of the Potomac River) lies between the two. Bolling Field was used by the U.S. Army Air Corps as well as U.S. Navy Aviation. Perhaps the original name of the base--the Anacostia Experimental Flying Field--when it opened in the late teens may help explain why acoustical tracking device testing was taking place.


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