My phone and radios are also in a waterproof bag and stay in it the entire time. I never take them out to use them. It works great through the bag. I have no reason to think the sat phone would be the same......
Greg

The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised. - George Will
"It's not that liberals aren't smart, it's just that so much of what they know isn't so" -Ronald Reagan