[TowerTalk] Grounding a metal roof/Direct TV

[K8RI]

On 12/27/2011 7:14 PM, john at kk9a.com wrote:
> Wow, what bad luck.  I would also be interested in a satellite TV protection
> device.  I imagine that lightning would hit the tower instead of the dish,
> but it wouldn't hurt to have some added protection.

If it's either Dish Network, or Direct TV they should have the devices 
available and might even install them. They should have installed one 
when they installed the dish.  Mine has a two coax grounding block which 
was right by the dish, but when I moved the dish to the 45G I put the 
grounding block about 5' off the ground on one tower leg.  That should 
suffice unless the TV set is very close to the dish. Then I'd add an ICE 
protector to each coax assuming you have two like my system.

BTW my shop is similar to your roof. I do not have a metal roof, but the 
entire interior of the shop is bonded barn metal. It is grounded to the 
common ground where the cables come in the shop. I have NEMA metal boxes 
inside and outside at these entrances which are connected via 2 or 3" 
steel conduit.  They are bolted together with through bolts as well as 
the nuts on the conduit.  Those nuts are tack welded to the conduit and 
to the boxes on both sides. The ground able also attaches to both 
boxes...or did. I have one of the boxes off at present.

73

Roger (K8RI)

>
> John
>
>
>
>
> To: TOWERTALK at contesting.com
> Subject: [TowerTalk] Grounding a metal roof/Direct TV
> From: Cqtestk4xs at aol.com
> Date: Tue, 27 Dec 2011 18:47:42 -0500 (EST)
> List-post: towertalk at contesting.com">mailto:towertalk at contesting.com
>
> <snip>
>
> Also before I even got any towers up last summer, we got nailed  with a
> lightning hit that came through the Direct TV and took out our 60 inch
> screen
> which was two days old.  Any place to get a Polyphaser for this that  won't
> break the bank?  I believe Direct uses around 1.2 gHz.
>
> As always thanks for the help.  I bet I get a usable answer in  an
> hour...always happens!
>
> Bill K4XS
>
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