[Elecraft] Vibroplex Bug

[Paul Christensen]

> Deoxit helps, as Ron says. Also intermittent cleaning with a business 
> card. But the real
> solution for bug keying of modern rigs -- even the K3, which *is* better 
> than the K2 at
> this -- is a simple circuit composed of a reed relay with a capacitor 
> across the coil to
> soak up the contact bounce.

Another solution is to create a solid-state buffer between the bug key line 
and the rig.  In the past, I've used a Schottky-input gate, driving a 2N7000 
transistor to the key line.

An off-the-shelf solution, might consist of the microHam PIC-based 
debouncer, developed by K1EL.  It was designed primarily for iambic paddles 
with dissimilar metal contacts, but it may be possible to adapt it for bug 
use.  W4TV would know for sure.

http://www.microham-usa.com/Products/Begali.html

Paul, W9AC