[Kenwood] TS-850S and CW Keying using a Computer's Serial Port

[dave at zievid.com]

I did a really simple mod shown at
http://www.zievid.com/W6OT/TS-850/TS-850.htm that brings a line out from
the internal keyer circuit to pin 1 of the ACC jack on the back.  Click on
"CW Keying" on the left menu bar.

An external transistor is used to switch the signal from the computer in a
project box.  This box servers as the connection between all the ACC jack
signals and stuff I want to connect to the rig (like the audio in/out for
digital modes)

Thus the computer serial port goes to the box, the box into the rig to
switch CW, and the internal keyer is still usable with a paddle.

Hope this helps,

 - Dave
 W6OT


> To all:
>
> Has anyone had success with the TS-850S and CW Keying
> via a computer's serial port DTR Line?
>
> I see quite a few circuits on the internet for this
> type of CW interface to the TS-850S CW Key Jack - But,
> have not been successful in getting any circuit to
> work.
>
> 73 Joe wa6axe
>
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