[Elecraft] KIO2 and serial keying

[Don Wilhelm]

Fred,

BE9 pin 7 connects (through the internal cable) to the microprocessor 
VRFDET signal for use in detection of the power output level.

As a result it is not available for other uses.  You will have to find 
another path.

73,
Don W3FPR

cloud runner wrote:
> I use N1MM contest logging program.  At present, I communicate between the PC and the K2 with its KIO2 using a serial cable, and I key the K2 using a parallel cable with Tom's (N0SS) keyer built into the parallel cable housing.  With parallel ports absent from many laptops, and in the interest of fewer cables...
> 
> My question(s):  
> 
> The KIO2 uses pin 2 and pin 3 for RXD and TXD communication with the radio, and pin 5 for the ground connection.
> 
> 1) Can I use pin 7, on the KIO2 labeled RF but appears that nothing is connected to it, to drive transistor keying of the radio instead of the parallel port?  
>