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An iambic keyer consists of two separately actuated switches.An iambic keyer consists of two separately actuated switches. Iambic operation is useful for sending characters that have alternating patterns such as a period or the letter C. The "iambic" function is created with an electronic keyer by squeezing the paddles together. The squeezing produces alternating dits and dahs similar to a sequence of iambs in poetry, which is where it gets its name.Iambic operation is useful for sending characters that have alternating patterns such as a period or the letter C.Although a single paddle keyer also utilizes separate contacts for dits and dahs, there is no ability to make both contacts simultaneously by squeezing the paddles together. Iambic keying by squeezing the paddles together creates alternating dits and dahs. This is supposed to increase speed and create a convenience or ease in sending cw.