[Elecraft] K3S RJ-45 Pin Alignment

[Michael Blake]

Those specific connections are exactly what "RJ45" describe. 

Michael Blake - K9JRI

> On May 1, 2016, at 21:37, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
>> On Sun,5/1/2016 6:19 PM, Michael Blake wrote:
>> The plug and jack are described by the number of available contact positions and the number of contacts installed in those positions.
> 
> The proper wiring of Ethernet cables REQUIRES that color code be strictly observed. An Ethernet cable is four twisted pairs, each having a different twist ratio. There's a Brown/White pair, an Orange/White pair, a Green/White pair, and a Blue/White pair.
> 
> Those four pairs each carries a separate signal, and it is critical that crosstalk between pairs is minimized. Crosstalk rejection is provided two ways -- primarily by twisting, AND improved by each pair having a different twist ratio.
> 
> In other words, simply having DC continuity between pins at each end of the cable is not enough -- they must be correctly paired, and those pairs most tightly twisted (for better noise rejection) are wired to their assigned pins.
> 
> 73, Jim K9YC
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