Saturday, June 7, 2008

Grounding (Bob, Week 2)

May 28, 2008

Here are my notes for this topic:

My Topic: Ground

3 or 4 types of Ground

1. DC Ground
2. RF Ground
3. Ground Plane for a Ground Plane Antenna
4. Lightning Protection Ground

Tonight I will be discussing the first two, which specifically relate to grounding the radio equipment in your shack.

The topic of Antennas is one that can, and will, fill several lessons and the ground plane antenna, a very useful and common type of antenna will be covered in another lesson.

Likewise, lightning protection is a topic that deserves it’s own separate lesson which will be done another Wednesday.

So, let’s talk about what makes a good ground for your equipment.

Low Impedance – regular wire is not so good
copper flashing
braided copper wire
can use the braid from coax
Don’t Daisy Chain
Buss Bar – Copper Pipe is good
connect each piece to the buss bar
Grounding Rod outside
cold water pipe

1 comment:

Bob Helling said...

Chris, K7BRK, asks: "I am setting up my shack in the basement. I've heard that long ground wire runs can result in RF problems and potential safety issues. Can I just use the ground system that is part of the electrical wiring in the basement? How would I do this?"

The answer is that you should ground your equipment to the electrical wiring ground but that is not enough. You also need a very low impedance short path to a good RF ground.