[Elecraft] Digital Mode Interface for the KX3 for WSJT modes

Fri Jul 13 17:25:19 EDT 2012

Hi Gary,

If it is still available, I would be interested.  PSE let me know, and I will send 
you cash tmrw by mail.....  VY 73, Lance

On 7/13/2012 3:12 AM, Gary K9GS [via Elecraft] wrote:
> Or just buy one of these:
>
> http://www.unifiedmicro.com/sci6.htm
>
> Hard to beat for $25.00.
>
> BTW....I have a brand new one for sale, already assembled, never used.
> Will sell for $20.00 including shipping to the lower 48 states.  Note
> this is NOT set up for the KX3...strictly stock using the supplied
> connectors/cables.
>
>
>
>
> On 7/12/2012 7:50 PM, Edward R. Cole wrote:
>
> > Don,
> >
> > After making several sound-card interfaces (never have used a
> > commercially made one),  I deduced the "surest way" to avoid audio
> > problems was by total isolation of computer ground and radio
> > ground.  East to accomplish using isolation transformers for audio
> > and opto-isolators for dc controls.
> >
> > I guess there are applications for a "VOX-like" PTT control, but I
> > use RTL or DTR lines for this with the sw I run.  Opto-isolator like
> > the 4N36 work well in this path.
> >
> > I am going to go ahead making up an I/F with tiny pcb transformers,
> > but probably not try installing all inside a sub-D
> > connector  (commonly called DB-9 or DB-25).  I will use a tiny
> > plastic box and small pc board with mini-phone connectors for audio
> > and DB-9 for RS-232 interface.  I have in mind that it will attach on
> > the back of the KX3 with a velcro-patch (so one can remove it at will).
> >
> > I am just stacked up at present so this will not be worked on
> > right-away (assuming Lance has one for his eme dxpedition).
> >
> > I am writing a power-point presentation to demo the KX3 this
> > weekend.  I'll add it to my website afterward.
> >
> > 73, Ed - KL7UW
> >
> > At 02:49 PM 7/12/2012, Don Wilhelm wrote:
> >> Thanks, yes that is the one that produces the PTT from the audio stream.
> >> I note that Skip no longer has kits and boards, but he has supplied
> >> a complete parts list and the circuit is simple enough to wire on
> >> perfboard.  The photos provide a nice layout guide.
> >>
> >> Contrary to K9YC's statements, I believe the transformers are
> >> necessary for use with a laptop.
> >> Jim's "bond everything together" is a great solution (and it works)
> >> for the home station using a desktop computer, but bonding the
> >> computer becomes more difficult when using laptops with all plastic
> >> cases.  I cannot find a good place to connect to the computer ground
> >> of my IBM Thinkpad.unless it just happens to be the jackscrews on
> >> the VGA connector - but those are there to prevent connector
> >> pullout, and may or may not be grounded.  (I use a desktop at the
> >> home station).
> >>
> >> 73,
> >> Don W3FPR
> >
> > 73, Ed - KL7UW, WD2XSH/45
> > ======================================
> > BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
> > EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-?
> > DUBUS Magazine USA Rep [hidden email] 
> </user/SendEmail.jtp?type=node&node=7559045&i=0>
> > "Kits made by KL7UW" http://www.kl7uw.com/kits.htm
> > ======================================
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> -- 
>
>
> 73,
>
> Gary K9GS
>
> Greater Milwaukee DX Association: http://www.gmdxa.org
> Society of Midwest Contesters: http://www.w9smc.com
> CW Ops #1032 http://www.cwops.org
>
> ************************************************
>
>
>
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-- 
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ)
P.O. Box 73
Frenchtown, MT   59834-0073
USA
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Skype: lanceW7GJ
2m DXCC #11/6m DXCC #815

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