required by the decoder, at which time the whole thing starts over again. This overall sequence from the start pulse to the end of the reset period is called a "frame".

A closer look at the stick controlled pulse generators will reveal that in order to achieve the serial encoding, they would not all start at the same time. The first channel pulse is triggered by the start of the frame, the second channel pulse is triggered by the end of the first pulse, the third

channel pulse is triggered by the end of the second pulse, and so on through all channels.

Referring to Figure 3 we see this sequential triggering. I have also altered the pulse widths in this diagram to reflect the channel one pot being centered, the channel 2 pot being centered, the channel 3 pot being at minimum, and the channel 4 pot being at maximum.

Now in early transmitters all this was done with