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    Vibroplex is the brand of side-to-side mechanical, semi-automatic Morse key first manufactured and sold in 1905 by the Vibroplex Company, after its invention and patent by Horace Greeley Martin of New York City in 1904. The original device became known as a "bug", most likely due to the original logo, which showed an "electrified bug".
    The Vibroplex Company has been in business continuously for 119 years, as of 2024. Amateur radio operator Scott E. Robbins, also known by the call sign W4PA, became the eighth owner of the Vibroplex Company on December 21, 2009. The company is located in Knoxville, Tennessee.

    The most common Vibroplex models have a single lever with a flat thumbpiece, or paddle, on the left side and a fingerpiece, or knob, on the right side.
    The advantage of the key over a standard telegraph key is that it automatically generates strings of one of the two pulses from which Morse code characters are composed, the shortest one or "dot" (or dits), so that the operator's hand does not have to make the rapid movements necessary to generate multiple dots. When the knob is pressed from the right, it makes a continuous contact suitable for sending "dashes" (or dahs). When the paddle is pressed from the left, a horizontal pendulum at the opposite end of the lever is set into motion, intermittently closing a set of contacts, sending a series of short pulses "dots" at a speed that is controlled by the position of the pendulum weight. A skilled operator can achieve sending speeds in excess of 40 words per minute with a bug.
    The Vibroplex Original Bug key has been in continuous production for over 100 years, with only minor cosmetic changes. Numerous Vibroplex keys are available to this day; the company presently markets and sells 27 variations of Morse code keys, including the Original Bug, iambic paddles, the Vibrokeyer (an electronic variant of the Original Bug) and traditional straight keys.


    See also


    High-speed telegraphy
    Morse code
    Prosigns for Morse code
    Telegrapher
    Telegraph key


    References




    External links


    Vibroplex Co., Inc.
    The Vibroplex Collector's Page
    Flash animation made by AE4RV demonstrating the operation of a Vibroplex
    Scott E. Robbins purchases Vibroplex Company, ARRL webpage, December 7, 2009
    Vibroplex mechanical bug key history

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Vibroplex - Since 1905

Vibroplex - Since 1905

Vibroplex - Since 1905

Vibroplex - Since 1905

Vibroplex | About Vibroplex

Vibroplex | About Vibroplex

Vibroplex

Vibroplex

WB9DLC Vibroplex Iambic

WB9DLC Vibroplex Iambic

NØUF

NØUF's Vibroplex Collection - 2ØØ1 Square Racer

NØUF

NØUF's Vibroplex Collection - 1943 Original Deluxe

NØUF

NØUF's Vibroplex Collection - 1926 Original

NØUF

NØUF's Vibroplex Collection - 1958 Presentation

NØUF

NØUF's Vibroplex Collection - 1982 Brass Racer

Vibroplex

Vibroplex

NØUF

NØUF's Vibroplex Collection - 1972 Deluxe Original

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Vibroplex - Since 1905

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