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

[Joe Subich, W4TV]

 > All of my hamshack equipment is on a single outlet.  This has me
 > wondering whether a good quality connection between the entry panel
 > SPG and the neutral *at the outlet* (it is less than two feet from
 > the entry panel) would approach or achieve the objective of helping
 > everything to rise and fall together.

*STOP!*  NEC requires that neutral be grounded *ONLY* at the
entry panel (main breaker box).  Neutral is not a substitute
for the safety ground (round pin on the 120V outlet) and should
never be connected to equipment chassis.

73,

    ... Joe, W4TV

On 7/20/2010 6:26 AM, Pete Smith wrote:
>
> 73, Pete N4ZR
>
> The World Contest Station Database, updated daily at
> www.conteststations.com The Reverse Beacon Network at
> http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots
> at telnet.reversebeacon.net, port 7000
>
>
> On 7/20/2010 12:01 AM, Don Wilhelm wrote:
>> ...so if you wish to protect your K3 correctly (along with all the
>> other equipment in your hamshack), install some good lightning
>> protection - single ground point entry point for ALL lines coming
>> into the hamshack - NO exceptions - ethernet, telco, antennas,
>> rotator, control lines, and yes even the AC mains entry to the
>> hamshack should enter through a single panel
>>
> All of my hamshack equipment is on a single outlet.  This has me
> wondering whether a good quality connection between the entry panel
> SPG and the neutral *at the outlet* (it is less than two feet from
> the entry panel) would approach or achieve the objective of helping
> everything to rise and fall together.
>> employing MOV or other protection devices present at that panel for
>> each and every line - this is the single most important point of
>> lightning protection.
>>
> Yet other knowledgeable people say that using MOVs in this way is apt
> to *cause* damage.  I realize that this discussion should probably
> move to Towertalk now, but don't want these questions to go unraised,
> and we have a bunch of the right people here.
>
> 73, Pete N4ZR
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