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Valkyrie Riders Cruiser Club > General > General Board > antenna grounding?
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Author Topic: antenna grounding?  (Read 1007 times)
Jeff K
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« on: September 16, 2011, 04:18:38 PM »
Going to try to finally get my 40' tower up. I looked up antenna grounding, and they say to drive a ground rod AND run a ground to the house ground rod. That is a long way from the antenna tower. like a 100' on the other side of the house.
Really? I have to trench around the entire house to catch the ground rod for the house???
I'd rather be riding (just to make it Valk worthy)  Wink
 
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The Anvil
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Derry, NH
« Reply #1 on: September 16, 2011, 04:46:41 PM »
Trench??? Eff that noise. Just lay some bare copper.
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Boxer rebellion, the Holy Child. They all pay their rent.
But none together can testify to the rhythm of a road well bent.
Saddles and zip codes, passports and gates, the Jones' keep.
In August the water is trickling, in April it's furious deep.

1997 Valk Standard, Red and White.
Jeff K
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« Reply #2 on: September 16, 2011, 04:52:20 PM »
Quote from: The Anvil on September 16, 2011, 04:46:41 PM
Trench??? Eff that noise. Just lay some bare copper.
It's a solid 100' and I'd have to go around my patio. I can't just lay it on the grass, and I cant follow the foundation, I have to cross 26' of patio.
I will if I have to I will. But I'm not looking forward to it.
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tank_post142
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south florida
« Reply #3 on: September 16, 2011, 04:56:39 PM »
check your local regulations, they will probably allow you drive two or three copper clad grd rods 12 ft apart. the other option may be to connect to the cold water lines and bond a jumper across the water meter.
« Last Edit: September 16, 2011, 05:15:31 PM by tank_post142 » Logged
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tank_post142
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south florida
« Reply #4 on: September 16, 2011, 05:11:49 PM »
read here: http://ecmweb.com/nec/code-basics/electric_article_radio_television/
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valkyriemc
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2000 blu/slvr Interstate, 2018 Ultra Limited

NE Florida
« Reply #5 on: September 16, 2011, 05:12:13 PM »
We ground from our equipment or out buildings to our radio towers. So they all go up and come down together at the same potential. Look up "Motorola R56" grounding standards, but they may tell you the same thing. When connecting the rods try to get a couple "one shot" exothermic welds from Tessco. They literally weld the cable to the top of the ground rod to reduce the connection resistance to zero. R56 will explain how long the rods need to be and how far apart to pound them down and bond them. I think the one shots we buy are about $5 or so apiece-gov. They are like little roman candles, read standback.
http://www.tessco.com/products/displayProductInfo.do?sku=442002&eventPage=1    
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Veteran USN '70-'76
Jeff K
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« Reply #6 on: September 17, 2011, 05:06:01 PM »
I've been rethinking the project. If I put the tower up next to the new garage I could bolt it down to the existing slab and avoid pouring a footing. It is also easier to get to a service ground. I could connect to the ground in the garage service panel. But it makes for a longer run of coax. Unless I put the modem and wireless router in the garage, and ran a cat 5 to the house to a second wireless router.

Tim, we need to talk...
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Jeff K
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« Reply #7 on: September 17, 2011, 08:02:04 PM »
Quote from: Pluggy on September 17, 2011, 06:09:55 PM
Unless you have a super thick slab, you risk damaging it.  Or worse.

It's a 40' aluminum tower with a cell antenna on it that is about 6" X 12". The slab had a metal building on it. the antenna tower would be on top of the footer for the floating slab. It is 12" thick, and the slab is about 19' X 30'
« Last Edit: September 17, 2011, 08:31:30 PM by Jeff K » Logged
Jeff K
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« Reply #8 on: September 17, 2011, 09:30:34 PM »
Electric lawn mower???? Good god I'd be mowing 24/7. Grin
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