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“I took my portable stations and I’d take it into the classroom and set up the antenna wherever I could run a coaxial cable into the classroom and make contacts and let the kids talk to various people. I took my portable computer and set that up and I’d send international Morse code and the computer would print it out in English so the kids could see what I was sending and receiving,” Rohrer said.

“It was cold and windy and desolate-looking,” Black said, “with a thick layer of coal dust over all. This was the beginning of a 20-week course in radio operations and mechanics. I found myself receiving, copying and sending the International Morse Code. I even began to kind of like what I was doing.”

During the day the student pilots have an hour of instruction in flying, an hour in sending and receiving International Morse Code by radio, an hour on other ground-school work�getting acquainted with aircraft and engines, tinkering with the mechanism of a Browning .30-calibre machine gun which they have to learn to take apart and put together, naming 95 separate parts.

That's the old International Morse code done with a flag.

The General Service Code, given herewith, also called the Continental Code and the International Morse Code, is used by the Army and Navy, and for cabling and wireless telegraphy.