Invisible Dishes

[aplok]

Re: Invisible Dishes

let me write here, as a great exemption, the words in german (maybe a kind soul will translate this in a technical correct english)

An mehreren Tagen im...

Nun, ich weiß nicht um Übersetzungstechnologien kennen,
aber hier ist das, was ich wieder von Ihrem genialen Kommentar:

If your dish points direct to the sun,
you'd better to shield your lnb from the 700 watts solar power with a T-bone,
and barbecue it !

this is why dishes -must- be varnished or dull/matt
and -not- shiny/brilliant
to reduce visible spectrum radiation reflection from the dish to the lnb
- whatsoever the visible color is -

... this geometric alignement sun-dish-lnb happens regularly along the year ...


ps: please check before that the paint does not absorb 10 ... 13 Ghz radiation

( however, this paint brend might be recommended to stealth cars from autobahn speed radar )

[kudok]

Re: Invisible Dishes

well, first of all, many thanks, aplok

In engineering we have no "700 watts solar power with a T-bone,
and barbecue it !" and therefore i do not use automatic programs.

The " paint brend, reserved to stealth cars from autobahn speed radar"
is normally not available and not used by "normal people"

[Mobley3]

Re: Invisible Dishes

If you use a gloss finish ie. Varnish or Gloss Paint you will reflect too much heat back on to the LNB, which will seriously shorten the life of it. Matt Paint ie. Emulsion Paint is best.

regards mobley3.

[kudok]

Re: Invisible Dishes

If you use a gloss finish ie. Varnish or Gloss Paint you will reflect too much heat back on to the LNB, which will seriously shorten the life of it. Matt Paint ie. Emulsion Paint is best.

regards mobley3.

... and what did i write in posting #12 ?

believe me, i have experience in this theme since 1985 with dishes 240 / 180 / 150 cm - all in a "special light grey"

[fandm]

Re: Invisible Dishes

Here it is in English.

On several days in the year and around noon the Sun directly behind the LNB is

the thesis of the rays of the Sun is directly on the (1-2 mm wide) aligned antenna in the LNB. This would mean that the bundling of the rays of the Sun is the effect of a Hohlspiegels. In many cases, in which the mirror with glossy paint was forefinger, this led already to overheating of the antenna and thus to the destruction of the LNB BB´s


From the factory, no mirror is shiny varnished, only matt.


The color does not matter here, it goes only to the avoidance of excessive reflection values.


My lumberjack english is not so good to explain this in engineer English,.

i don ´ t have to automatic translation program whom i trust to give this words in a correct output.
Hope it helps.

Try the Bing translator it comes with ****** as one of its tools if you use ****** as your main search engine and if you to highlight the words you need translating then right click on the highlight in the drop down box you will find translate with bing.

[kudok]

Re: Invisible Dishes

thanks again for translation, fandm

by the way: Hohlspiegel = concave mirror

( you see, the automatic ... ... )

[Mobley3]

Re: Invisible Dishes

... and what did i write in posting #12 ?

believe me, i have experience in this theme since 1985 with dishes 240 / 180 / 150 cm - all in a "special light grey"

Hi kudok, in my defense, I did try to delete my post when I read the other replies, unfortunately the system would not allow me to do so.Something about message being too short.

regards mobley3

[kudok]

Re: Invisible Dishes

everything is o.k. Mobley3,

let the posting as it is, no reason to delete

kindest regards
kudok

[rizwan]

Re: Invisible Dishes

You better Install Antenna , not seen from Street, If there is no surveillance from Sky

[sataday]

Re: Invisible Dishes

You can lay a satellite dish flat on the ground to make it less visible.

I tried to unload a picture but failed, but have a look here:
//http://www.bbrv.dreamstation.com/sat.html

[sat-boy]

Re: Invisible Dishes

Thanks a lot about all of this useful discussion. The painting not response for my location. But it's gave me a new idea ! May be I able to cover my dish by some kind of light wall ! ? like stucco or cardboard or wood and of curse water proof kind ! What are you think?

[Mobley3]

Re: Invisible Dishes

Thanks a lot about all of this useful discussion. The painting not response for my location. But it's gave me a new idea ! May be I able to cover my dish by some kind of light wall ! ? like stucco or cardboard or wood and of curse water proof kind ! What are you think?

I can not see this working for you, any obstacle in the path of the Dish/Lnb will have an adverse effect on your reception, even trying to get reception through a glass window will drop your signal level,so a wall will not allow signal through, even one made from wood/cardboard. We are talking about minute signals which then need to be amplified in order to give you watchable reception.

regards mobley3.

[herrr]

Re: Invisible Dishes

I think that this could be a good idea.
Let's think about a dish covered with a radome to prevent damages in extreme locations.
There are a lot of plastic materials transparent to microwaves.
They are used also in flat dishes.
If our friend finds something with a good transparence to microwaves and an unexpected look (for example perhaps polystyrene sheets)...

[benchsirius]

Re: Invisible Dishes

I have seen some dishes disguised as rocks, also some can be fitted inside globes that look like big lights or a garden ornament. Others that look like umbrellas / sunshades.
So must be possible to hide even a standard dish. Plastic and glass actually let microwave signals in quite well, although obviously your signal will go down.

[kudok]

Re: Invisible Dishes

glass only if it contains NO plumb / plumbum / lead (chem. PB)

and normally you do not find glass without PB,
and that´s the reason why a sat-dish does not work behind closed windows