[Elecraft] Computer control question - K2

[John R. Lonigro]

Greg Fischer wrote:

 There are two sets of RXD and TXD connections, one each for 12V and 5V 
lines, not sure which the K2 needs though I think it's the 5V lines.

Greg:
Not according to the description of the KIO2 on the Elecraft site.  
Looks like you'd use the 12V connections, since the KIO2 provides true 
RS232 levels, not TTL (5V) levels like some (most) rigs.

>The KIO2 DB9 to the computer only uses 3 lines, TXD, RXD and ground.  Does
>anyone see any conflicts in interfacing to this unit?
>  
>
Since most serial ports normally use just 3 lines, it probably will 
work, as long as you can set the correct baud rate and stop bits (and 
voltage levels).  I've read on this reflector that you need to make sure 
the other pins on the connector going to the KIO2 are NOT wired to 
anything, i.e., just wire up TXD, RXD, and ground.  But I don't have a 
KIO2, so perhaps someone with more direct experience can give you better 
advice.

73's

John AA0VE