[TowerTalk] Filter location and grounding rods

[Mickey Baker]

You just asked a few simple questions with complicated answers.

Read this: https://sites.auburn.edu/admin/facilities/spw-bid-calendar/11-150%20AU%20Regional%20Airport-Construct%20a%20Self-Supporting%20Radio%20Tower/Project%20Documents/1/Motorola_R56_2005_manual.pdf

"Power line filter" might as well put it on the shack side of whatever you might be filtering.

I prefer the method outlined in the Motorola document. Dig a trench around the shack and use a number of ground rods, bonded together with tower, single point ground and the building service entrance ground with large copper wire.
I use 7 8 foot ground rods. 

If you can drive them, use 8' rods. They're cheap.

Again, these are not simple cut and dried answers...

I invested in this conversation so that you'd tell me more about your aluminum foil and copper wiring shielding in your shack. Pictures maybe?

Mickey

On Dec 19, 2013, at 12:05 AM, Hans Hammarquist <hanslg at aol.com> wrote:

> Gentlemen,
> 
> 
> Two questions regarding the finishing of my new radio shack:
> 
> Where to put a power line filter:
> 
> 
> The shack is totaly shielded (wrapped in aluminum foil and copper wires) and I am planning to put filter on the power line entering the shack. The shack is located around 12 feet from the main house. I have a conduit burried between the house and the shack. Now, where is the best place for a line filter? Shall I put it there the power line exiting the house or there it entering the shack? 
> 
> 
> Grounding rods:
> 
> 
> Grounding the shack, I am planning to put a couple of grounding rods around the shack. I heard somewhere tha it is more efficient to use several short (4 feet) grounding rods than one long (8 fet) rod. Does anyone knows how many short rods are needed for each long rod or is this a fractional number?
> 
> 
> With best 73 de,
> 
> 
> Hans - N2JFS
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk