[Elecraft] K3: Added protection for RS-232 port

[Tom W8JI]

This is absolutely the single most important thing to do....

> In addition, bringing all lines into the station (including AC mains
> power, telco, LAN as well as antennas, rotor cables and control lines)
> through a single point grounding panel which has protective devices
> installed on each and every line,

I would also pay attention to what Jim Brown said about the pin 1 problem. 
That is at the very top of important things to worry about.

http://www.w8ji.com/station_ground.htm

Pete, being on the second floor, has some additional wiring "tricks" he must 
do.

73 Tom