OK Guys,
I finally solved this problem. The solution is the Linux program nohup. It allows the RPi WSPR TX program to keep running even if the Putty terminal is disconnected or closed.
My working command in the WsprryPi directory starts with: sudo nohup sudo ./wspr - - - - - and ends with &? This writes to nohup.out in the pi home directory and keeps WSPR transmissions going until I stop them (and the Pi OS) at day's end with a shutdown command. The nohup.out file will keep getting larger and will have to be deleted occasionally.
73,
Tom??? K4ZAD
