[Elecraft] K3 Mechanical Bug Contact Bounce

Bob Cunnings bob.cunnings at gmail.com
Tue Sep 16 10:40:42 EDT 2008


I disagree. I use 3 different bugs with the K3 (GHD, Vibroplex), and
have no such problem - but for years I've tucked a small piece of foam
behind the dot contact spring to eliminate ragged dot syndrome. Also,
the bug needs to be adjusted properly - with an old Simpson 260 across
the bug, I  adjust for a 50% of full scale (Rx100) resistance reading
on a string of 8 - 10 dots.

Bob NW8L

On Tue, Sep 16, 2008 at 8:18 AM, Stephen Ellington <n4lq at insightbb.com> wrote:
> Bugs will not work correctly with the K3 unless a capacitor is installed across the key line. The TenTec Omni VII has the same exact problem. Radio Shack sells a tiny Tantalum capacitor 1uf., which work perfectly. You can actually install it inside an RCA plug or simply slip the capacitor's leads under the screws of your bug.
> Cleaning the bug contacts has nothing to do with this.
> Steve N4LQ
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