Pahom, thanks for your reply and encouragement. The Contraption seems to work as is but I just need to find out if the ToTeM receiver will work better (actually some sort of hybrid). Honestly that computer generated stripboard looks like near impossible for my eyesight and somewhat shaky soldering technique. I lost count of how many jumpers on that board, nearly 70, so times two that is a lot of soldering right there. I'd never get it working because the strip board peels apart when doing repairs, at least at my skill level. I wish somebody had a PCB to sell, but for now this project is just experimentation so I don't care how pretty it doesn't look.