Hi Hans,
I was wondering about this when I saw the QMX would eventually have SSB support. Not at all unexpected, but certainly brings about some closure.
I recall when you were starting to work on QSX, there were discussions around feature accessibility for blind hams, like morse or spoken readout of menus and other operating parameters. What’s your position on that as regards QMX Plus? Will something be available, or will we need to do something with CAT control and an external device??
Vy 73,
--
Buddy Brannan, KB5ELV, WRVB670?-?Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
toggle quoted message
Show quoted text
On Mar 18, 2025, at 7:01?AM, Hans Summers via groups.io <hans.summers@...> wrote:
Hi all
I hereby officially retire the QSX project which was started in 2018 and aimed to provide a low cost, high performance multi-band multi-mode QRP transceiver. QSX was an ambitious project, probably TOO ambitious. I did probably bite off more than I could chew. As a result of publicity around the project it also caused a lot of pressure and stress.?
But things developed regardless; and it was a happy?day when I decided to take a break from it, and put it on the shelf for a while while I continued with other developments. Numerous new kits came about including the QCX 50W PA, then the QCX+, QCX-mini, QDX, QMX and QMX+. Many people noticed and commented that many of these new kits took steps towards my original goals for QSX. I was getting there, step by step.?
Now with the implementation of SSB and CESSB in QMX+, there is at least a 95% overlap between the planned functionality of QSX and the planned/delivered functionality of QMX+. In many ways QMX+?surpasses the QSX plan in features and performance, and does so at a lower price ($125 compared to my $150 target for QSX, both without enclosure).?
I am measuring for example, IMD -40 dB PEP two-tone test results in QMX+ on 40m; that compares to -30 dB PEP measured on the 10W Linear module of a QSX, -35 dB PEP for Elecraft K3S (ARRL lab measurement in QST review) and -36 dB PEP for Elecraft KX2 (ARRL lab measurement in QST review). Of course two-tone testing isn't everything but as a single number comparison point, it's not a bad indication.?
So we'll continue and focus on QMX/QMX+ firmware development. And consign QSX to history, with respect to the ambition, innovation and ongoing development which it inspired, and whose end result is now the QMX-series.?
