Question T4A12
From subelement T4 - T4A
What is an electronic keyer?
Why is this correct?
An electronic keyer assists in manual sending of Morse code by automatically generating properly timed dots and dashes when connected to a paddle-type key. Unlike options A, B, and D which describe antenna switches, VOX systems, and security interlocks respectively, the keyer specifically helps CW operators create clean, consistent Morse transmissions with correct timing ratios.
Memory tip
Look for equipment names that directly describe their function — 'keyer' relates to 'keying' transmissions, specifically CW (Morse code). This pattern applies across amateur radio: equipment names usually indicate their primary operating purpose rather than secondary features.
Learn more
Electronic keyers connect to paddle keys where squeezing one side sends dits (dots) and the other sends dahs (dashes). The keyer maintains proper 3:1 dah-to-dit timing ratios and appropriate spacing between elements, which is difficult to achieve manually at higher speeds. Modern transceivers often include built-in keyers, making CW operation more accessible to operators learning Morse code or wanting consistent sending at various speeds.
Think about it
Why do you think proper timing ratios between dots and dashes become more critical as CW sending speed increases?