I found two old RPi3's in my junk box this morning and so an idea sprung from the junk stuff. With a bit of panache and a flare for the dramatic, I updated the software and included the vwspkg in the QUISK directory.
Both took the VWS pkg software and after identifying the serial port as /dev/ttyACM0 and in a blink of an eye the MHST was receiving signals. JFF (Just For Fun) I installed a 50 Ohm resistor on what is normally the transmit output port of the steerable amp and put my scope probe across the resistor and this is what I saw.
Damn -- it is working! That said it will not transmit with the RPI4 or RPi5. The RPi3 is configured as a 32-Bit machine and the 4/5 are a 64Bit machines. I have no explanation.
True it is a crap looking signal with a lot of trash riding along but the 1st real sign of a signal output in transmit. Some big issues remain such as cleaning up the signal and the transmitted frequency is nowhere correct.
So, if you have an RPI3 -- you are good to go!
MHST with the RPi3
Them that know can make it go.
I got it figured out the why of the 10% Tariff on the uninhabited island. You see it is not common knowledge that this island is also a rare DX Location. Is the new FCC commissioner genuflecting and paying homage to you know who since any DXpedition to this exotic location would bring revenue into the coffers to support the new $5Million Gold Card?
Afterall, it seems like 13 Billionaires fill key government positions and so it goes: anything to keep money flowing into the government bank accounts. Yes, pocket change to them but a cost to those trying to give out rare DX contacts.
It is truly amazing what you hear on 4oM coming from the 5 and 7 call areas!
73's
Pete N6QW