Dish earth?

"Richard Tobin" wrote in message
...
In article ,
Michael Chare wrote:

AIUI no one bothers with dish earths in the UK but there are some counties
where a dish earth is compulsory.

Do you mean "some countries"?

-- Richard
--
Please remember to mention me / in tapes you leave behind.


Yes!

--
Michael Chare

"Paul Ratcliffe" wrote in message
...
On Sun, 12 Oct 2008 16:47:12 +0100, Chas Gill

wrote:

I'm probably showing my ignorance here (having just returned form a very
convivial hour or two in the local hostelry), but if the dish is earthed
surely all the (minute) RF that it collects from the satellite will be
diverted to earth rather than reflected to the LNB - thus effectively
defeating the entire point of a reflective collector?

If I connect my mirror to earth, will it reflect the light or just show me
black?

Large metal buildings are connected to earth in a very definite way, but
they reflect radio like nobody's business.

Bill

Hi

"Bill Wright" wrote in message
...

"Trevor" wrote in message
...
Hi
are we talking like lightening rod here?

There is just the symbol for earth with a nut and bolt to fix it to,
I assume to a water pipe in the house?

The dish is a Raven 80 and I have fitted a quad LNB to it.

No, forget it for a one dwelling domestic install.

Bill

Thanks to all for the replies. I shall leave it unearthed

On Mon, 13 Oct 2008 19:40:51 +0100, Bill Wright wrote:
Large metal buildings are connected to earth in a very definite
way, but they reflect radio like nobody's business.

Next thing you will be saying is that the large parabolic dish located at
Jodrell Bank is earthed ;+) ;+) ;+)

http://www.manchestereveningnews.co.uk/news/
s/1040585_mps_back_jodrell_bank_battle


[Which I would definitely expect to have earthing protection]

"Trevor" wrote in message
...
Hi

"andrew fox" wrote in message
news
Trevor wrote:
Hi

I have fitted a satellite dish for Freesat which is working fine. I did
notice that there is provision for an earth connection to the dish but
looking at local Sky fitted dishes they don't seem to bother to earth
them.

Should I bother to earth mine?

Trevor



are we talking like lightening rod here?

There is just the symbol for earth with a nut and bolt to fix it to,
I assume to a water pipe in the house?

The dish is a Raven 80 and I have fitted a quad LNB to it.




Earthing to a water pipe is now illegal as so many pipes are plastic.

"Richard Tobin" wrote in message
...
In article ,
Michael Chare wrote:

AIUI no one bothers with dish earths in the UK but there are some counties
where a dish earth is compulsory.

Do you mean "some countries"?
Headingley is Yorkshires ground isn't it?

--
Graham.

%Profound_observation%

In article , scribeth
thus
On 14 Oct,
"Geoff Pearson" wrote:


Earthing to a water pipe is now illegal as so many pipes are plastic.

Using a water pipe as the sole means of earthing, yes, but metal water pipes
in buildings must be bonded to the earthing system at their point of entry
into the building. For similar reasons, external satellite dishes and TV
aerials should also be equipotential bonded to the earthing system, but this
is rarely done, apart from where the dish/aerial is shared between dwellings.


In some lightning prone countries earthing most anything is a good idea.

Even if it doesn't get a direct wallop there are other leakage and
induced currents that can do damage even in the UK quite rare but here
within a hundred yards to the best of my knowledge a roof fire was
started by lightning. Two aerials had hits that took out the TV's and
one did for our distribution amp but its now well earthed..
--
Tony Sayer