A while back I did a touch keying modification to my QMX radio using one of K6ARK’s touch keying PCB. Here is a demo of it.
The project was quite a fun shoe-horning in another PCB into the QMX case, but I did it….and it worked! Here is a PDF of my notes on the process.
Another modification I did to my QMX was to change the band support to make it work on 40-10 meters. I had previously modified this radio for 60-15 meters (this was before QRP-Labs offered a kit for those bands). Dan, AI6XG, came up with a better mod for use on 40-10 and latter further modified my rig for 40-10 using Dan’s notes.
Here is a quick short showing off both the band mod and the touch keying mod.
Since then I have updated to the firmware that supports SSB and all is well with that and my mods. I’m currently using and End Fed Random Wire with a T-1 tuner to cover all those bands. My next project with this rig is to make a trapped/linked end fed half wave antenna to eliminate the use of the tuner.