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'[EE] Ice buildup on antenna'
Minnesota. Ice storm. Internet not working. :-(
Dupont's Snow and Ice spray has some nasty solvents in it.
Anyone ever used it on an antenna or satellite dish?
There are expensive superhydrophobic sprays for satellite domes.
I think Kings Rain Shield and Magic Dome are the same but can't find the MSDS
or a picture of the back label.
Material CAS Number %
Solvent, Naptha which may also contain the 10-25
* Cyclohexane 110-82-7
Propane 74-98-6 10-20
Butane 106-97-8 10-20
Acetone 67-64-1 10-20
Distillates (Petroleum), Hydrotreated Heavy 5-12
Petroleum Distillate, Light Naphthenic 64742-53-6 5-12
Poly(Dimethylsiloxane) 63148-62-9 4-10
DuPont "Teflon" Polytetrafluoroethylene 0.01-
When we put our Directv dish in, we located it on a low flat roof near a 2nd story bedroom window. When it gets snow covered cutting reception, I just stick a broom out the window and dust it off. Ice hasn't been a problem in 8 years, but there is a first time for everything. I have seen electric resistance heaters that go on the back of the dishes, don't know how good they work. I suppose if need be, I could duct tape a heat gun to the broom and melt ice that way. Or just take the garden hose preferably with hot water, and blast it away. :)
On 11/22/2010 12:10 PM, Charles Craft wrote:
> When we put our Directv dish in, we located it on a low flat roof near a
> 2nd story bedroom window. When it gets snow covered cutting reception, I
> just stick a broom out the window and dust it off. Ice hasn't been a
> problem in 8 years, but there is a first time for everything.
I think occasionally of Boeing 737's falling, ice laden, into the Potomac.
I fly enough in smaller airliners in less rigorously codified areas
that such memories seem not totally inappropriate to retain.
(And that accident was in the US!).
Where it seems appropriate I stand at the last window on the "air
bridge" before an aircraft and look carefully for icing. One day it
may save my life. Probably not. Not paranoid (much) just doing what
"experts" recommend. Passing few craft are lost that way. If I ever
saw enough to worry me it would be interesting to see if I had the
nerve to not board - and what would happen then, with my bag on board.
(I have had a stunning demonstartion of how fast Chinese airline staff
can remove my bag from an aircraft when they wish to). I've never
noticed anyone else carrying out this inspection. Maybe not engineers,
or vaguely paranoid.
At least with Directv all that you lose if you get it wring is reception :-)
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