[Elecraft] KPA500 and KAT500 for sale

[Bob McGraw]

We had a similar situation where the cable company did not ground their 
cable to the AC Mains ground nor did they even provide a driven ground 
for their system.  The result was damaged TV's, surround sound system, 
and etc.   When I found this situation, the solution was simple.   
Subscribe to satellite TV.   And I saw to it the dish was grounded to 
the AC Mains ground by dedicated conductor.  The installer wasn't happy 
to do this.  He contacted his supervisor who shortly appeared on the 
property.   I explained to situation to him and the installer.  Their 
conclusion "we normally do not do this".   My response was "do it as I 
prescribe, or take your equipment away and cancel my subscription".

Had the same situation with the phone/internet system when fiber was 
installed.   The fiber cable has a steel messenger.  I observed the 
installation and asked the installer to attach the messenger to the AC 
Mains ground.  He was glad to do so, but ask why?  I explained my 
concern was the copper from the fiber box to my shop was in place in 
their drop cable.   While the fiber itself was not a concern, the steel 
messenger that runs with the fiber cable is a conductor and should be 
properly grounded.

I strongly agree with Jim, K9YC where he prescribes EVERY piece of 
equipment and source MUST be bonded to the AC Mains ground. And using 
only one supply source for the station power is the best.    Doesn't 
make any difference if you run QRP or 5 megawatts.  One dedicated power 
source.

73

Bob, K4TAX


On 6/2/2025 11:00 AM, elecraft-request at mailman.qth.net wrote:
> Message: 14
> Date: Sat, 31 May 2025 19:56:52 -0500
> From: Clay Autery<KY5G at montac.com>
> To:elecraft at mailman.qth.net
> Subject: Re: [Elecraft] KPA500 and KAT500 for sale
> Message-ID:<622807e7-8087-46af-8201-0c4aef093305 at montac.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Specifically why I made a special sub-panel/drop installation adjacent
> to the station.? All power over one wire to the service. Grounds are
> impeccable.? Lightning shunt path(s) could be better.
> I'd settle with flipping the on switch lately.
>
> But I STILL lost $25k in equipment when the "cable company" sent and
> un-grounded coax into my home.? That coax sent a goodly portion of a
> full strike 6 feet away on a bull pine tree.
> EVERYTHING attached to that coax died.? EVERYTHING.
>
> Do it all.? OVER engineer.? Over build.? You can't do too much, but you
> will run out of budget.? (smile)
>
> PS - Thank Jim for the help over the last decade or so.? I'm still
> pretty ignorant in the grand scheme, but you helped me learn enough to
> be successful.
>
> Be well, y'all!
>
> Clay E. Autery, Jr.
> KY5G