Karin,

Jack makes a very valid point. If you are not using the K2 to PC special cable to the AUX IO connector that removes all but TXD, RXD and SIGNAL GROUND from the RS-232 cable, the K2 may display "strange happenings" or in the worst case can cause damage to both the K2 and serial port.

73,
Don W3FPR

On 12/22/2017 4:20 PM, Jack Brindle wrote:
Karin;

Please elaborate on exactly what you are trying to do and what you are seeing.

The AUXBUS data stream is not a part o the CAT system, and is used only 
internally for
communications between our modules. If you are seeing CAT issues, then I 
strongly
suspect something else is going on. One thing to remember with the K2 is that 
the
AUX I/O connector carries more than just RS-232 signals, and when connecting the
radio to the computer these non-RS-232 signals MUST NOT connect to the computer
DE-9 connector at all, or very bad things will happen.

Jack Brindle, W6FB
Elecraft Engineering


On Dec 22, 2017, at 12:44 PM, Karin Johnson <[email protected]> wrote:

Hello Group:
I am trying to debug an issue I am having with CAT control of an Elecraft K2
using the WSPR software.
WSPR is setup to use CAT control for turning on the Xmtr.  That part works
but I'm seeing some very
Strange bit streams on the AUXBUS during the WSPR control sequence.
I would rather not take up the list with back and forth debugging this
issue.  Anyone on the list have
Some knowledge of the AUXBUS protocol that I could communicate with to run
down this issue.
I have posted on the WSPR Yahoo group and the WSPR net site some comments on
this issue.
Regards,   Karin K3UU   Palm Harbor, FL


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