[Elecraft] K3 Audio/RFI Feedback

[Don Wilhelm]

Jim and all,

I agree too, but would like to clarify that the "bonding" should not be 
a "helter-skelter" connection of one piece of equipment to another.
The most effective way of accomplishing that is to connect each piece of 
equipment in the shack to a common point (which may be optionally 
grounded or connected to a low impedance for RF (mother earth ground is 
only for lightning protection and personal safety, not RF grounding).
That type of bonding connection is often referred to as a "star" 
configuration - as opposed to a 'daisy-chain' where the connection is 
from one piece of equipment to another.

73,
Don W3FPR

Jim Brown wrote:
> On Tue, 19 Jan 2010 14:57:16 -0500, Joe Subich, W4TV 
> wrote:
>
>   
>> Improve the grounding of your station, 
>> including direct grounds on both the K3 and computer 
>> to the common ground point and add common mode chokes 
>> to both your feedline and the "Line In" connection to 
>> your computer. 
>>     
>
> I agree with the advice, but I would not CALL it 
> "grounding" -- that implies ground rods and all that 
> mess. Rather, it is BONDING. It is unlikely that a 
> connection to EARTH is part of a solution. BONDING is 
> simply a very short, beefy copper connection between 
> the CHASSIS of all of the equipment. Most important is 
> between the chassis of the K3 and the chassis of the 
> computer. 
>
> See http://audiosystemsgroup.com/HamInterfacing.pdf  
>
>   
>