[Lowfer] HELP.. I Need A Relay Keyed By Computer

[Andy - KU4XR]

Hi all:

I need a simple " something " to use the serial port to engage a 
relay that will be used to key my radio.. I have been keying by
VOX up till this point, but the rig has never been happy doing
that..AND; for it to work, I have to use a bonding wire between 
the case of the computer, and the rig chassis or all it will do
is sit there and chatter the VOX relay.. Pressing the send button
and all works fine.. The problem with the bonding wire is that
it causes almost 2 S-units of computer hash in the receiver when
I connect it to the radio.. I would think that a computer keyed
relay could be used to key the radio " Without " a direct bond
between the computer and the rig, thus hopefully eliminating the
noise problem, and the rig keying issues at the same time..
Thank for any advise on the subject..

73: - Andy - KU4XR