And what about converting to the Newer Faster Raspberry Pi 5 running at 64 bits as well. From reports on just the differences between the RPI 4 and the RPI 5 should have a positive effect on the overall performance of the SBitX. However when I also read where other SDR run into similar issues with CW above 15 WPM and some have had improved performance using external keyers, is why I suggested giving this a try on the SBitX I cannot as I have not saved up enough to afford my own SBitX at the moment, takes time when you live in a fixed pension income. Plus at 83 reading is much easier than physically doing, so to speak. And I do not have any grand kids to do it for me as well. All this aside the SBitX concept offers the amateur radio operators who want a device they can actually open up and play with a much better option than the neatly packaged but tightly buttoned up commercial options. Ashhar has left many open doors in to the physical hardware and software allowing for so many possibilities. for me time and agility and ability are limiting factors. and as to keying and polling this is where pure CW transmitter as opposed to a digitally derived SSB transmitter has it advantages. This is a compromise that has to be made if one wants an all mode Transceiver. I for one do not want to turn back the clock. I have done my time lugging tube transmitters and tube receivers to field day. Even my power supply weighs more than my preferred transceiver. The SBitX concept offers so much not just for portable operation but for the average apartment dweller the SBitX remote operation built right into the design opens up the entire RF world to amateurs who have no hope of having and antenna farm at their residence. But perhaps on the roof of their apartment building with a battery supplied radio at the base, who knows. I do not mean to cause discord by any suggestions rather try a different approach to find if the first door is locked try the next door so to speak, we are Amateur Radio "Experimental" Service. Thanks for Litening
VE6LX