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 Post subject: AN/USM-3A Test-Tool set & TV-4/U Tube Tester
PostPosted: Mar Thu 08, 2018 12:15 pm 
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Joined: Mar Mon 05, 2018 10:19 am
Posts: 2
Hi all,
I have two AN/USM3 and AN/USM3-A to be repaired.
They contain the very nice TV-4/U Tube Tested, made from Weston; it is very similar to the Weston 685, type 3A of which I have the manual.

I have found the schematic diagram of the TV-4/U, and I have the tube data, available here: http://www.antiqueairwaves.com/nlee/

I do have the Technician's Handbook (stock 16-B-670001-102) and the tube data folder.

What I'm missing are the COMPLETE maintenance manuals: the NAVSHIPS 91688 and the NAVSHIPS 91146.
Those manuals are covering all the other bits and tools contained in that clever package.

Can anybody point me to a place where to find them?
Thanks,
Paolo from Italy


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 Post subject: Re: AN/USM-3A Test-Tool set & TV-4/U Tube Tester
PostPosted: Mar Fri 09, 2018 8:55 pm 
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Joined: Nov Wed 30, 2016 7:35 pm
Posts: 1187
Location: Sunbury, Ohio 43074
http://www.skywaves.ar88.net/mil/USM-3A/Section_1.PDF

This might be one of them?

_________________
He who dies with the most sheer tonnage of ancient test gear, wins!


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