[Elecraft] KAT500 / W2 Serial Connection

[Don Wilhelm]

Brian,

I don't know which DE-9 to 3.5mm cable that you currently have, but it 
is easy to check with an ohmmeter.
Does DE9 pin 5 connect to the shell of the 3.5mm?  That is Signal Ground.
Next check DE-9 pin 2 - that should connect to the tip of the 3.5mm plug.
Then DE-9 pin 3 should connect to the ring of the 3.5mm plug.

If all the cables you are asking about come from Elecraft gear, the 
answer is that they are interchangeable.

OK, there is some confusion in the designation of RXD and TXD - if the 
tip and ring connections are swapped in my connections above, that is 
the result of that confusion - in other words, if pins 2 and 3 are 
swapped from my description, it is my error, and the cable will work.

73,
Don W3FPR

On 8/17/2015 9:34 PM, Brian Linn wrote:
> Don & Elecraft:
>
>   
>
> I'm having difficulty connecting to either my KAT500 or W2 via a serial
> cable. Is the KSXER (3.5mm to DB9-F) any different from the standard 3.5mm
> to DB9-F that I already own?
>
>   
>
> Brian KD0HII
>
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