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MFJ-550 Telegraph Key

  • MFJ-550
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Product Description


The MFJ-550 Morse code straight key includes an adjustment for tension and an adjustment for gap size.

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Product Reviews

  1. simple to use 4 Star Review

    Posted by on 1st Sep 2021

    You need to mount this key on some sort of base. It works as intended.

  2. works well 5 Star Review

    Posted by on 17th May 2016

    Pretty simple device, but it works just like I would expect. You need to hold or screw the base down to prevent it from tipping though.

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