[Elecraft] RTTY via FSK-D

[Dave Hachadorian]

Comments interspersed.

Dave Hachadorian, K6LL
Yuma, AZ

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From: "Brett Howard" <brett at livecomputers.com>
Sent: Thursday, March 04, 2010 1:11 AM
To: <elecraft at mailman.qth.net>
Subject: [Elecraft] RTTY via FSK-D

> So I'm thinking about wiring up the FSK IN pin on the AUX 
> connector to
> do RTTY TX "properly".  I'm curious of a few things before I 
> take the
> time to make the cable.
>
> First off how do people usually drive this signal?  I assume 
> its usually
> taken off of a serial port...


Yes, circuit is shown here:
http://www.aa5au.com/rttyinterface.html




 I've tried a few RTTY apps and I've
> gotten them all to work via AFSK and all seem to have their 
> pros/cons.
> I have a feeling in the end that I'll probably most use MMTTY 
> being that
> it has a very nice interface into N1MM (unless there is another
> application that has a nice interface into N1MM that I should 
> be aware
> of).


MMTTY is the way to go.


>
> Finally my last question is that if this comes off of a UART 
> how has the
> timing been for people?


The timing is solid.