On 11/02/2014 23:00, Fred Roberts wrote:
On Tue, 11 Feb 2014 22:04:51 +0000, Kafkaësque
wrote:

On 11/02/2014 19:49, gareth wrote:
I wonder if any have experimented with magnets hovering over
reed relays to act as the contacts of a Morse Key, possibly on
the vibrating arm of a bug key?

The reason i ask is the difficulty of excising noise on the dot contact
of the bug key I made a couple of years ago.

I bought a Ten-Tec keyer at a rally, which used electromagnets instead
of springs.

Electromagnets or permanent magnets?

Electromagnets. There was an adjustment for the current flowing through
the magnets which was a bit like the spring tension on a proper twin paddle.