Eric Greenwell wrote:
On 12/20/2012 9:17 AM, Tom Gardner wrote:
wrote:
Thank you Dan for your article link

John DeRosa wrote:
Your question is less about "I have a problem and want to fix it."
versus, "I don't want any problems in the first place.

Exactly.

Do late model sailplanes actually have a "factory" grounding point?

Certainly not when they are in the air!

OK, that's a joke, but it does bring into sharp
relief that the "ground" concept is a fiction
(except under limited circumstances that are not
relevant here). It is also a fiction on the ground
as well, particularly where RF is concerned (see
any book on antenna design).

How do you think we should be discussing the issue?

I don't really understand the question, but maybe
we shouldn't be discussing it here. Interference
arises due to many causes, is transmitted by many
means, and is received in different ways [1]. A specific
solution to one combination of source/route/destination
will not be effective for other combinations. I'm
sorry, but there aren't any generic solutions.

Probably the best general advice is to have good quality
equipment, cables and connectors, and to ensure the
connectors are properly tightened.

And even that won't prevent the "rusty bolt effect"


[1] as a single _simple_ example, given signals coupling
from one wire to another leading to interference, there
are two types of interference, near-end crosstalk and
far-end crosstalk. The causes are different and the
solutions are different.

RF introduces a whole slew of more subtle effects.
There are _many_ books on the topic, which is a good
indication that it isn't a simple problem with a simple
solution.

But of course one solution to one problem may well
be simple.