[Collins] Collins transformer

[Dr. Gerald N. Johnson]

Google turned up three hits on the part number.
www.audioasylum.com/cgi/t.mpl?f=bottlehead&m=24175 says it was in a box 
called a "Universal Precision Track Selector" likely an aircraft 
navigation device.

www.lintechcomponents.com/product/007389448/674067300/13499 says its a 
30 Hz audio transformer in a rather cryptic description. That would be 
part of something using aircraft Omni beacons modulated at 30 Hz, I think.

Googling "Universal Precision Track Selector" says it could have been a 
497V-3 and that the Library of Congress Copyright Office has a manual.

www.aeroexpress.com/products/manufacturer-list/product/182-Collins-479V-3-Universal-Precision-Track-Selector.html 
says that is a test box used to calibrate aircraft navigation receivers.

www.rockwellcollins.com/Services_and_Support/~/media/311F5D7B1A65436D8D4EE004F522E427.ashx 
shows manuals available in 2012, not at ham prices though.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.


On 12/13/2012 11:19 PM, Glenn Little WB4UIV wrote:
> I have a Freed transformer with a Collins part number of 674-0673-00.
> The Freed number is 36747.
> The dimensions of the transformer is 2x2.5x2.9 inches.
> The transformer weighs 25.4 oz.
> The transformer is a sealed transformer with 4 studs for mounting.
> The transformer has 12 terminals with 4 windings.
> The windings are terminal 1-2, 4-4, 5-6-7-8, and 9-10-11-12.
> It appears that the equipment that contained this transformer was
> scrapped due to a quality control problem during installation of the
> transformer.
> Terminal 12 was never soldered.
> Does anyone recognize this transformer?
> Google has been no help.
> If it helps, the transformer still has enough wire still attached to the
> terminals to determine the colors of the wires.
> Any help appreciated.
>
> I will probably scrap the transformer if I cannot find data on it.
>
>
> Thanks
> 73
> Glenn
> WB4UIV
>
> _