[Elecraft] K2 interface with steppIR and computer

[Don Wilhelm]

John,

What needs to "make sense" is that you can only have one driver on an 
RS-232 line.  It is not a matter of "making sense", but is a technical 
requirement.  If you have two devices trying to send stuff at the same 
time, the result at the receiving end is garbage.  In "HamSpeak" we call 
that QRM.

73,
Don W3FPR

On 1/7/2012 5:44 PM, ke4d wrote:
> Got it!  It didn't make sense to me but once I inserted the "S13" cable from
> the K2 to the Y cable, removed the TXD from the SteppIr DB9 and changed the
> jumper from pin 8 to pin 9 per SteppIR and Don, it all worked. Whew!  Ok,
> only the S13 cable didn't make sense but it works so I guess it doesn't have
> to make sense to me.
>
> John KE4D
>
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