[Elecraft] K3: RS-232 cable

[JT Croteau]

On 10/11/07, Julian G4ILO <julian.g4ilo at gmail.com> wrote:
> The downside being that ready made cables usually have molded-on
> plugs, so you can't fit a keying circuit inside.

You don't need to.  The K3 is wired for DTS and RTS keying, see page
18 of the web manual:

"PTT and Keying: The DTR and RTS signals are not used as RS232
hardware handshaking lines. Instead, the K3 can be configured to use
either of these signals as PTT IN or KEY IN via the CONFIG:PTT-KEY
menu entry. No external level translation is required, since these are
RS232- compatible inputs. The default for both signals is inactive
(unused). Refer to your software
documentation to see if PTT or keying via RS232 lines is available."

-- 
JT Croteau, N1ESE - Manchester, NH (FN42gx)