Loading ...
Sorry, an error occurred while loading the content.

Re: Vibroplex contacts

Expand Messages
  • VK4ACB
    Thank you both for the information Willis and Fred, I see what you mean, I carefully cleaned the perimeter of the contacts and can now see the thickness of the
    Message 1 of 7 , Jul 7, 2011
    • 0 Attachment
      Thank you both for the information Willis and Fred, I see what you mean,
      I carefully cleaned the perimeter of the contacts and can now see the
      thickness of the actual contact, there is still plenty of material left
      on them so they should respond nicely.

      73 Wade VK4WM
    • Fred Maas
      meant that you might collect experiences in a shorter period of time. Don t think there are definitive answers, but I can tell you that I have sometimes
      Message 2 of 7 , Jul 9, 2011
      • 0 Attachment
        meant that you might collect experiences in a shorter period of time.  Don't think there are definitive answers, but I can tell you that I have sometimes puzzled over the problem of a key not sending well, for YEARS, before hopefully finally finding what was wrong with it.  It isn't necessarily obvious at all.  It isn't all in the operator.
         
        Anwayway, I have had close to one hundred bugs here over the years.  I have sold or traded off all but a handful.  The handful I have kept are not necessarily the best senders, but the most esoteric and the most different from one another in appearance, design, or use.
         
        The 1908 vibroplex with the very rare NorCross plate made split dits.  Experience led me fairly rapidly to the dit spring.
         
        The 1910 Double Lever wasn't so easy.  I could not find a single person who actually knew how to adjust them, nor could I find a single collector who had a copy of any early vibroplex instructions for adjusting one.  I feel stupid now, it took me several years to figure out what now seems obvious.  Hard to explain the solution, the problem is that with two independent levers, it is possible to close both at the same time.  obviously, the dash closure will cover up any dits that might be going on.  Kinda iambic actually.
         
        I have a wonderfully rare and exotic Bent Dow from the forties.  It too was plagued by split dits.  There were several things working together so the solution wasn't easy or obvious.
         
        Both the early mecograph, and the Australian copy ca;;ed Simplex Auto, use a release mechanism to make dits, opposite of a vibroplex.  The spring is always loaded, and you release it.
         
        All of them are so much fun to use!
         
        73,  Fred - kt5x
         
         
         
         
         
      • Richard Meiss
        Hi, All - I have found another solution for scratchy and bouncy dots when keying a very unforgiving solid state rig. I use the bug to key an MFJ keyer that
        Message 3 of 7 , Jul 9, 2011
        • 0 Attachment
          Hi, All -

          I have found another solution for scratchy and "bouncy" dots when keying a very unforgiving solid state rig. I use the bug to key an MFJ keyer that has a "semiautomatic" function. The electronics in the keyer are very forgiving of bounces and scratches, but what comes out the other end is exactly what you told the bug to do - including all of your timing and "swing" peculiarities. The problem that I have found with a capacitor that you have access to only the "C" in an RC circuit; the inaccessible components vary with the rig that you are keying, and the effectiveness of this approach may also vary.

          73 de Rich, WB9LPU
        • nzeronv
          I have found that Ten-Tec rigs reproduce the switch bounce of the Vibroplex dit contacts too faithfully. Fortunately, a 1 uF capacitor across the bug
          Message 4 of 7 , Jul 15, 2011
          • 0 Attachment
            I have found that Ten-Tec rigs reproduce the switch bounce of the Vibroplex dit contacts too faithfully. Fortunately, a 1 uF capacitor across the bug terminals did the trick with my Omni VI. YMMV.

            Jack - N0NV
            SKCC 1662



            --- In cw_bugs@yahoogroups.com, "Richard Meiss" <wb9lpu@...> wrote:
            >
            > Hi, All -
            >
            > I have found another solution for scratchy and "bouncy" dots when keying a very unforgiving solid state rig. I use the bug to key an MFJ keyer that has a "semiautomatic" function. The electronics in the keyer are very forgiving of bounces and scratches, but what comes out the other end is exactly what you told the bug to do - including all of your timing and "swing" peculiarities. The problem that I have found with a capacitor that you have access to only the "C" in an RC circuit; the inaccessible components vary with the rig that you are keying, and the effectiveness of this approach may also vary.
            >
            > 73 de Rich, WB9LPU
            >
          Your message has been successfully submitted and would be delivered to recipients shortly.