This page discusses how to generate a thoroughly modern Morse code radio signal by adding one more circuit stage to the two-stage transmitter topology (Figure 1) used in basic amateur radio Morse code transmitters for nearly 40 years.

Figure 1—Two-stage transmitter from the 1936 ARRL Handbook. This circuit, from "A Medium-Power Transmitter for 7, 14, and 28 mc.," QST, October 1936, pages 11–17 and 72, is a simplification of a design presented by George Grammer, W1DF, in "Transmitters for Ten Meters," QST, January 1936, pages 11–14, 80, and 82.

[to be continued...]