More progress on the MHST rig and thus some more sharing. I note that when there is nothing but boring words, the interest level drops. This often happens on the weekend posts. So, for this last day of March 2025, hopefully more interesting stuff.
The MHST project has two main elements and these are of course the hardware and the software. The more visible of course is the hardware and even then, not much of that. The not so much seen of course is the software. Both are needed to be working for the total rig to work.
I posted a video about some of the progress and problems if only to show it was alive. One comment -- hey you have the presence of the opposite sideband image. That was true as the video was done without any adjustments. Contained internally within the QUISK software is a means to compensate for not so perfect hardware where component tolerances do not create the perfect 90-degree phase shift. In fact, you have the capability to make these adjustments over the whole band of operation.
So, to that commenter here is very short clip of an SSB signal where the opposite sideband image has been dramatically reduced. There are adjustments for both transmit and receive.
With help from the VWS Maker's Group I now have both the SPOT and PTT buttons working in QUISK. Hit either button on the QUISK dashboard and the software goes into Transmit and the Relay that activates the T/R sequence works.
What doesn't work is that I don't see any audio streams going into the ADE-1's on Transmit. Not sure in which pile is the problem. It has to be something in the settings that directs the signal from the Microphone Sound Card into an I and Q streams. More opportunities.
One more photo. I got 40M FT-8 receive sort of working and again a matter of the right settings.
Them that know can make it go.
73's
Pete N6QW