Richard,

Grounding questions are one of those things in the hobby that  will 
get you a multitude of   contradictory suggestions.

If you try them all, you will probably find one that works for you.

I think all would agree that running multiple ground wires from each 
piece of gear in the shack to a ground rod is a bad idea.   Usual 
practice is to run short pieces of grounding wire from each piece of 
gear to a  common grounding point in the shack, with wires being as 
short as possible.   Then a single heavy conductor to the ground rod.

Another problem is the length of the wire (or wires in your case) from 
the equipment to the ground rod. If the wrong length, it (they) will 
radiate like an antenna.

What is the length from the shack to the ground rod?


Good luck, 73, Steve KW3A

On 1/14/2016 9:08 PM, Richard B. McDonald wrote:
> Hey Steve!
>
> You said it!  This high power stuff is gnarly!  I will try ferrite if it
> persists.  The antenna is about 40' from the shack.
>
> following is information about my grounding system.  About 10' from the
> shack, I have two copper 8' ground rods sunk into the ground.  All 120V AC
> into the shack is grounded to one of them.  Connected to the other ground
> rod is a terminal; attached to which are about five separate 14 gauge copper
> wires each of which goes to equipment in the shack (rig, tuner, PC, amp,
> etc.).  then, both ground rods are connected with a 10 gauge wire.  For the
> power supply which is shutting down, I just attached yet another ground
> wire, and I also wrapped its AC power cord in tin foil.  I have not yet
> tested to see if it still shuts down with these new two grounding/shielding
> improvements.
>
>
> 73,
> Richard KK6MRH
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Steve Forst
> Sent: Thursday, January 14, 2016 7:27 AM
> To: [log in to unmask]
> Subject: Re: How to Stop RFI from Shutting Down My TS-2000's Power Supply?
>
> Richard,
>
> Welcome  to the world of high power.   How do you have the radio
> grounded?   How close is the antenna to the operating position?
>
> I would invest in some ferrites.  E-bay is a good source.     I would
> clamp the AC line to the power supply, and the  12 vdc line coming out.
>     Also clamp everything  connected to the radio/amp (coax, power,
> control cables, etc.).    The other school of thought is to only clamp
> things until you find the  one that is the problem.
>
> If your antenna is 5 feet from your operating position, things may be more
> problematic.  As Ron suggests, antenna/feedline/balun  may be the
> culprit.    Sometimes this stuff is hard to solve, glad you have help on
> site.
>
>
> 73, good luck, Steve KW3A
>
> On 1/14/2016 9:48 AM, Richard B. McDonald wrote:
>> Hi!
>>
>>
>>
>> In the process of setting up my Ameritron ALS-1306 amp with my Kenwood
>> TS-2000 and an MFJ 998 tuner, sometimes RFI shuts down the TS-2000's power
>> supply.  My Elmer is convinced it is RFI because 1) it seems only to
> happen
>> on 20M (so far, anyway) and 2) it only happens when we crank-up the 1306
>> beyond ~200W.  The 1306 is on a totally different, dedicated power line:
>> 240V.  The TS-2000's power supply is on the household's 120V.  The power
>> supply for the TS-2000 is an Astrin SS-30
>> <https://www.hamcity.com/store/pc/SS-30-p363.htm> .  So, what can I do to
>> stop this?
>>
>>
>>
>> 73,
>>
>> Richard KK6MRH
>>
>