Serial 647

Editor’s note: Serial 647 is a virtual duplicate of Serial 593, which was a serial related to contact with HAM radio operators, and hence was not transcribed. The difference between the two is that the duplicate crosses through the introductory lines listing the agencies sending and receiving the serial. In their place, the duplicate inserts a new line of text at the beginning of the second paragraph which reads: “By teletype 11/29/78, SAC Milwaukee advised that”.