[Amps] Amp causing RFI

[Alek Petkovic]

I silver soldered the ground strap from the ground bar in my amplifier 
rack and the radial wires in my back yard to my earth rod. The rod is 
3/4" copper pipe.

Used brown tip silver solder.

On 5/02/2020 12:28 am, John Simmons wrote:
> I recommend you read the ARRL book 'Grounding and bonding'. I also 
> highly recommend you connect to ground rods with exothermic welding.
>
> -de John NI0K
>
> Richard Solomon wrote on 2/4/2020 10:20 AM:
>> I agree with Glen. In my case a well
>> working system all of a sudden became
>> "wonky". RF Feedback, etc.
>>
>> Turned out the ground lead connection
>> outside had loosened up. Re-tightening
>> the lead on the ground rod cured all my
>> problems.
>>
>> YMMV
>>
>> 73, Dick, W1KSZ
>>
>> On Tue, Feb 4, 2020 at 9:10 AM Glen Zook via Amps <amps at contesting.com>
>> wrote:
>>
>>> Having spent over 30-years as a telecommunications consultant, and 
>>> having
>>> specialties in lightning protection and r.f. grounding, I say that 
>>> adding
>>> ground rods, etc., is NOT balderdash!  No, adding such does not always
>>> produce measurable results.  However, the majority of times adding 
>>> external
>>> grounding does contribute favorably.
>>> There are PROPER methods of installing coaxial cable.  NFPA NEC 
>>> (National
>>> Electrical Code) requires that the coaxial cable shield be connected 
>>> to a
>>> ground rod at the point where it enters the building.  This is for
>>> lightning protection as well as providing an r.f. grounding point.  
>>> Also,
>>> when the cable is installed on a tower, mast, etc., the shield needs 
>>> to be
>>> grounded to that structure as near the antenna as possible and at 
>>> the point
>>> the cable leaves the structure to enter the building.  In addition, 
>>> if the
>>> structure is higher than around 100-feet, the shield needs to be 
>>> grounded
>>> every 50-feet to 75-feet along the structure.
>>> All "other" ground rods, etc., MUST also be connected to the AC mains
>>> ground.  There are several reasons for this of which lightning 
>>> protection
>>> is foremost.
>>> Way too many seem to think that the 3rd wire in the AC wiring in their
>>> house provides sufficient grounding.  Sometimes it does and, more times
>>> than not, there can be problems on various bands caused by the 
>>> length of
>>> the wire between the outlet and the AC mains ground rod.
>>> The whole idea is to get the lowest impedance path to ground. When just
>>> wire is concerned, the length of the lead needs to be no more than 
>>> around
>>> 4-feet long and shorter is better.  You can increase the length of the
>>> grounding path by using something like aluminum flashing which is 
>>> available
>>> in widths from around 4-inches wide to more than 36-inches wide.  
>>> Aluminum
>>> is not as conductive as copper.  However, it is much cheaper and having
>>> wider widths overrides the conductivity.
>>> Just get the flashing as near the ground rod as possible (usually on 
>>> the
>>> inside of the building), and then a short piece of large diameter wire
>>> through the building wall to the ground rod.
>>> There are other things, like using chemical ground rods, that can
>>> definitely improve r.f. grounding.  One just has to do as much as 
>>> possible
>>> to achieve a good grounding system.  Of course, the more that the
>>> individual can do themselves, the cash outlay is reduced.
>>> Glen, K9STH
>>> Website: https://k9sth.net
>>>
>>>      On Monday, February 3, 2020, 09:57:16 PM CST, Jim Brown <
>>> jim at audiosystemsgroup.com> wrote:
>>> Balderdash. The earth is not a sump into which noise, RFI, and other
>>> trash is poured. Comments like this bring to mind the infinite 
>>> number of
>>> monkeys and typewriters producing Shakespeare.
>>>
>>> 73, Jim K9YC
>>>
>>>
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