[Elecraft] K3 / P3 with SteppIR

[Larry Gerhardstein]

David, that probably is it.  My Y-device shows ohm meter continuity on 
all 9 pins.  For the required isolation, at least one pin should show open.

Larry W7IN

On 4/2/2014 21:26, David Christ wrote:
> I suspect that the problem is that you have two transmitters on the RS232 circuit.  Maybe you can find some help in this similar situation.
>
> <http://elecraft.365791.n2.nabble.com/K3-Edgeport-Adapter-with-K3-and-SteppIR-td4819889.html>
>
> David K0LUM
>
>
> On Apr 2, 2014, at 3:52 PM, Larry Gerhardstein <W7IN at montana.com> wrote:
>
>> I have a K3 / P3 / SteppIR SDA100.  Everything is set to 38400 baud.  I have connected a Y-cable to the RS232 connection on the K3.  One side of the Y is connected to the SteppIR controller with a null modem inserted (as directed by SteppIR instructions).  The other side is connected to the XCVR connection on the P3.  Both work, but not at the same time.  Unplugging one of the Y connections makes the other work, and visa versa.  Any ideas?  Perhaps there is a special & splitter that will provide the necessary isolation??  Or perhaps I need to orient the Y a different way??
>>
>> Larry W7IN
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