On Wed, 2 Feb 2005 15:09:14 -0500, "Jon KB1HTW"
wrote:

Which is the preferred
route for minimizing RFI or cable capacitance affecting the Start/Key pulse
signals?

Hi Jon,

Use RS-422 components to translate voltage signals into current
signals, and then back (at the other end) to voltage signals. If you
have surplus twisted pairs, then this will give you the
transmission/length requirements.

73's
Richard Clark, KB7QHC