[Elecraft] KX3 Internal soundcard

Bob WB4SON at gmail.com
Sun Nov 15 18:41:59 EST 2015


I doubt the KX3 would pass the required frequency stability requirements
for MS-DMT M110A modem software, even with very careful temperature
calibration.

73, Bob, WB4SON


On Sat, Nov 14, 2015 at 2:37 PM, Bill Frantz <frantz at pwpconsult.com> wrote:

> One of the items on my future projects list is a small box which would
> plug into the left side of the KX3 and intercept all the plugs there. My
> desire for such a box comes from my habit of switching to a band and
> looking for signals with the PX3. When I see an interesting signal, I
> switch to the appropriate mode to work the station. This habit means I'm
> switching between SSB, CW, Data A, and AFSK A all the time. Saying this
> switching is a lot easier on the K3 than it is on the KX3 is an
> understatement.
>
> (The remaining problems in the K3 are turning VOX on for data and off for
> SSB and switching between DATA A and AFSK A. I think I have solved the data
> mode switching problem using the per-band frequency memories. I have one
> for CW, one for SSB, one for DATA A, and one for AFSK A. Each selects a
> frequency in the appropriate part of the band.)
>
> This box would include connectors for connecting the PX3 and its pass thru
> for a computer, the microphone, an external CW key, headphones, and DC
> power. It would include controls for headphone volume so the headphones
> could be used when tuning RTTY signals. I do worry about building the
> physical plug array so all the plugs make a reliable connection.
>
> Thanks fo Ken's message, I'm thinking of including sound card
> functionality and a microcontroller to perform mode switching and other
> functions via the async ascii programming interface.
>
> I don't expect to have time to start this project anytime soon, and I
> would be delighted if Elecraft or someone else picked it up and ran with it.
>
> 73 Bill AE6JV
>
> On 11/14/15 at 4:58 AM, k.alexander at rogers.com (Ken Alexander) wrote:
>
> I don't necessarily need an internal sound card.  I'm very happy with the
>> external soundcard I use with my notebook computer. However, I won't ever
>> buy another transceiver that doesn't have a dedicated Data jack, even if it
>> does say Elecraft on the front.  I find it a pain to be constantly
>> unplugging cables and inserting new ones each time I change modes.  I'm
>> afraid of wearing out the 3.5mm jacks on the KX3 with all the inserting in
>> and removing of plugs.  I know I can use Y-adapters, but that only adds to
>> the considerable mess hanging off the side of my KX3.
>>
>
> -----------------------------------------------------------------------
> Bill Frantz        | "The only thing we have to   | Periwinkle
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