[Elecraft] K3 and Datamodes

[FISCHER,GREG]

You would need to connect the K3's PC IN and OUT lines to 
your computer soundcard and the RS-232 serial interface 
for freq/mode info and setting up the PTT/CW.

I believe the only time you will need some other external 
interface would be for true FSK.  The line for this is on 
the ACC connector and should be keyed via an open 
collector at less than 5 volts.

73
Greg
AB7R


On Tue, 5 Jun 2007 12:31:50 -0400 (EDT)
  Thom LaCosta <lacosta at bcpl.net> wrote:
> So, the FAQ says
> 
> The K3 has the features of most high-end "sound card 
>interfaces" built in. Transformer-coupled stereo line out 
>is included. This enables you to have the main receiver 
>and the subreceiver feed into your computer for various 
>data modes.  Transformer-coupled line input is provided, 
>for various digital modes or other external audio sources 
>for transmit.
> 
> The RS232 serial interface supports RTS and DTR inputs. 
>These can be configured by use of a set up menu so either 
>signal can be PTT, KEY or both. This meets the needs of 
>most data mode and logging programs.  We used RS232 to 
>support users of still-popular DOS mode logging and other 
>utility programs, as well as computers with legacy ports. 
>Elecraft also sells a USB-to-RS232 cable that has been 
>tested with the K3 to allow users of more modern 
>computers complete access to the interface.
> 
> So that means I can simply use the transformer coupled 
>lines to talk to the computer that is using Mixw?
> 
> If that's the case, one wouldn't need a rigexpert if you 
>had the mysterious USB to serial 
>whathamacallit/prayerwheel/gizmo?
> 
> Thom,EIEIO
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