[Elecraft] Can I split or share my ACC port?

[Don Wilhelm]

Chip,

Look at that cable with "different eyes"  only the pin 2 and pin 3 
connections carry RS-232 signals - Oh yes, pin 5 is also RS-232 Signal 
Ground.
All other pins are internal K2 signals which are used between the K2 and 
the KPA100, KAT100, KRC2 and/or the XV series transverters.  By design, 
there is no conflict on these internal K2 signals,

If you observe carefully, you will find that pins 2, 3 and 5 connect 
only between the K2 and the computer.  A single point to point 
connection - that is NOT a "Y" connection for the RS-232 signals.

As an aside, if you are looking at the K2 AUX I/O connector as an RS-232 
connector, forget that - it is not - all DB-9 connectors are NOT an 
RS-232 connector.  If you plug a standard computer serial port cable 
into the K2 AUX I/O connector, you can damage your K2.

Use the cable wired as indicated in the KAT100 manual and forget about 
any additional "splitter" - all will be well.

73,
Don W3FPR

On 8/8/2012 7:23 AM, Chip Stratton wrote:
> I do have a properly wired Rs232 to KIO2 adapter cable which I have been
> using for K2 to computer comms. What I want is to use this with a splitter
> cable so all three - computer, KAT100, and K2 can each do their thing
> together without conflict. All three will be talkers and listeners, but I
> expect the computer is unlikely to want to talk when the others do.
>
>