Something like once every 2 days I cannot watch horizontal SAT channels for about a half day. It says "no signal". During this "no signal" time I get very rarely watchable time. Like 1 minute in an hour. The after this "no signal" time ends there is no issue for about 1-2 days. That was for H.
On the other hand, I never have issues with vertically-polarized TV channels.
What might be the problem?