On 9/27/2011 1:10 PM, Sal wrote:
" wrote in message
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Thanks for all the info

I am going to ground out the satellite dish to the tower.

Now it is grounded to my new plazma and I would feel more comfortable with
it grounded to the tower. Don't want nothing happening to that new plazma.
Now of course if it ever got hit by lightning I would imagine the receiver
would get fried, maybe not the tv, the coax goes into the receiver, then
into the yamaha sourround sound then into the tv. A jolt has to stop
somewhere along that line.

I know what an opto-isolator is. (Provides a signal path with a short-range
modulated light beam -- no copper connection) I don't know if any have been
designed/sold for lightning protection.



Typical optos can stand off 5kV or so. Speed is a problem There are off
the shelf opto isolator widgets for things like RS232 and phone lines
that are fairly inexpensive. Get to RF, though, and the price goes way up.

If you need more, you go to a fiber optic link of some sort.