The MRHS in cooperation with our good friends at the Cipher History Museum will send a coded message in 5-letter groups via the facilities of coast stations KPH on Saturday July 22, 2023 Pacific time. The message will be encrypted using the famous Enigma code machine and is an authentic message sent by a U-boat in the North Atlantic in 1942.
I was able to copy KPH before and after the enigma transmission but not during. I was disappointed.