[Elecraft] Re: KX1 PSK31? [how about FSK?]

[John, KI6WX]

Chas;
You don't need to add a reactance modulator to the KX1.  The AD9834 DDS will
directly generate FSK.  It would almost be a trivial mod for Elecraft to add
a firmware option for FSK31 that is activated through the key jack.

A computer is a lot heavier to lug around than a KX1.  A small lightweight
portable keyboard and display would be much more compatible.  The marketing
issue would be cost.  It would probably cost a substantial fraction of the
KX1 price to sell such an option.
-John

----- Original Message ----- 
From: "Charles Greene" <W1CG at QSL.NET>
To: <elecraft at mailman.qth.net>
Sent: Friday, October 08, 2004 3:58 AM
Subject: Re: [Elecraft] Re: KX1 PSK31? [how about FSK?]


> John,
>
> I would think the first step should be to add a reactance modulator and
> simple interface to a computer sound card, ala the psk20, to the KX1 and
> use it with an ordinary computer, running a program like MixW.  Mixw
> supports FSK31 by sending an FM modulated signal via the computer sound
> card to the mike input of a transceiver.  For example, I can operate FSK31
> on my K2 now; I just have to select it in MixW.  I have a simple interface
> made up.  Anyone can do this with any rig that operates on PSK31. The only
> difference is that the KX1 finals would operate class C, and the other
rigs
> finals would operate class AB or some other linear mode.  Of course that
> means you carry a LapTop with you when you go portable, but some have
> stated that isn't a problem.  To have Elecraft to make a small keyboard
and
> display that would plug into a KX1 type radio and allow if to transmit and
> receive FSK31, seems to be reinventing the computer.  HP, Dell, etc do it
> pretty well,  Yes I'd like to have one, but  from Elecraft's point of view
> I'm not sure there is much of a market for that.  Also, I'm not sure who
> you would talk to, as I have never seen FSK31 used, but maybe we could
> start an Elecraft net.
>
> 73,
>
> Chas,  W1CG
>