Brent,
To the best of my knowledge, there is no way to use the "Paddle" jack on a Softrock RXTX to generate CW. It has been quite a few years since I went down the road that you are now on. I found nothing back then. Seems like it was a RXTX "To-Do" item that was never completed. With a lot of help from the two gentlemen mentioned below, who knew much more about the RXTX than I did, a latency free solution which allowed the direct keying of the Softrock RXTX by using HDSDR and an external keyer that provides the sidetone was developed. All of that history is available here. What is in these posts is better than my memory of all of the details.
Search the forum using "K3JZD" and you will come up with message threads from late 2014 and early 2015 that discuss a method of direct keying the RXTX that was flushed out by Warren 9V1TD and Alan G4ZFQ.
In spite of some of the message titles, it is Semi Break In, not Full Break In. The HDSDR software will not support Full Break In, and that software is not open source. I have implemented this Semi Break In system, and I have successfully used my RXTX units for many CW contacts and during many QRP/QRPp events since then, without finding any shortcomings with this approach..
73,
Jody - K3JZD
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On Sat, Sep 25, 2021 at 07:21 PM, Brent DeWitt wrote:
Is there any software, other than Rocky, that uses the key input on an
Ensemble RXTX? As a bonus, is the latency low enough to use it with a
side-tone? Seems like everything I've seen so far requires the CW key to be
connected to the PC somehow.
TIA,
Brent, AB1LF
