Wet LNB

[kostis]

Re: Wet LNB

Imagine rain with strong wind.What function have plastic bottle now?

i saw a factory made cover a few days ago here in the forum but still i can imagine how it will help.

[rizwan]

Re: Wet LNB

Only metallic or wooden cover disturb the signals, Try to make that kind of cover as small as possible to just cover LNB

[ivngat76]

Re: Wet LNB

No problem becouse the plastic is only around and back the LNB, but there is nothing in front of LNB, maybe a problem could be the wind

[herrr]

Re: Wet LNB

Uhm...this could be even good for snow...but if it snows heavily, it could be worse...
As a matter of facts, snow can find like a bridge to cover from LNB to the dish, that's the worst at all...we saw that in these days in northern Italy.

(see attached image: dish of a friend of mine 3 days ago)

[fandm]

Re: Wet LNB

You should use a Amalgum type of tape fpr joints on the connectors.
And covers on the lnb are pointless.
if you live in fringe reception areas when it rains or snows it is the rain and snow that is falling that blocks some of the signal.

[parsonline]

Re: Wet LNB

lnbs have brake surface and they dont need to special thing for protect them.
however if external layer broke maybe it need to other material like plastic or cover.

[Satphoenix]

Re: Wet LNB

I can confirm, wet snow (melting) on the lnb and the signal is completly down (nearly to zero).
I went to the dish, cleaned this snow from the lnb and the signal came back with the old strength.
In winter, a "plastic umbrella" is very usefull!

[KVF1966]

Re: Wet LNB

Fully agree with Satphoenix, wet snow always adhere to the lnb and the signal decreases significantly, and we have to clear away the snow, protection of the plastic seems effective, you only need to do a good design of the plastic casing

[mrb]

Re: Wet LNB

mmm, i tried to add a cutted plastic bottle on my lnb, and the signal from 98% is decreased to 87%. Maybe the plastic was too long? Now it's raining, later i'll take a picture

[skytec]

Re: Wet LNB

mmm, i tried to add a cutted plastic bottle on my lnb, and the signal from 98% is decreased to 87%. Maybe the plastic was too long? Now it's raining, later i'll take a picture

I think that this is not the solution.
Drops on plastic bottle will cause a loss of signal.

[parsonline]

Re: Wet LNB

but i dont feel bad effect on signals in cold weather but might effect on weak signals.

[jonny2by4]

Re: Wet LNB

you should not have to much problem with lnb unless it is water ingress.

[kalpikos]

Re: Wet LNB

mmm, i tried to add a cutted plastic bottle on my lnb, and the signal from 98% is decreased to 87%. Maybe the plastic was too long? Now it's raining, later i'll take a picture

Try to cut the bottle a little more and make it shorter.
And don't try it with heavy rain.
The rain absorbs the microwave frequencies downlinked
off the satellites, so the heavier the rain the more the absorption ...
and your signal is weaker.

[besit]

Re: Wet LNB

Just read some comments

the wet lnb doesn't affect so much the sat reception, the problem is that the rain limit the dish focus to lnb

Wet dish, dry dish - no difference in signal. Wet LNBF - loss of signal, I tested it and I'm sure. I live in a place where almost always rainy - you may believe me

Imagine rain with strong wind.What function have plastic bottle now?

Wind from south - full rain proof, wind from west or east - partial proof. Wind from north - dish protected by the wall.

mmm, i tried to add a cutted plastic bottle on my lnb, and the signal from 98% is decreased to 87%. Maybe the plastic was too long? Now it's raining, later i'll take a picture

You did something wrong. Look at pictures of my setup.

[KVF1966]

Re: Wet LNB

I did an experiment with a plastic bottle and did visor for the LNB, reduce the signal strength was not.