[Elecraft] Improved KIO3A Immunity to EMP

[Jim Brown]

On 5/24/2012 7:29 AM, VE3GNO Daniel wrote:
> I tried to use serial port isolator with 5 wires to get better lightning protection.

It would be hard to beat a K9YC serial cable -- CAT5 cable, with one 
pair per circuit, the return of each pair bonded to the DB9 shell at 
each end -- AND every chassis bonded together with short, fat copper.

see http://audiosystemsgroup.com/HamInterfacing.pdf for details

73, Jim K9YC