I solved the problem by removing pin 2 from one side of the null modem
between the K3 and SDA100. Now turning the K3 frequency tuning knob
results in correct frequency display on both P3 and SteppIR controller.
The pin was easily removed with a pair of needle nose pliers. I can now
get on to more rewarding activity. Tnx all.
Larry W7IN
On 4/2/2014 22:00, Mike K2MK wrote:
Hi Larry,
One leg of the Y cable attaches to the SDA100. The other leg of the Y cable
attaches to the PC connection on the back of the P3. Then the separate RS232
cable supplied with the P3 goes between the XCVR connection on the P3 and
the RS232 connection on the K3.
73,
Mike K2MK
Larry Gerhardstein 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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