low budget sci/fi movie circa 1980s or older

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The doors of wisdom are never shut. - 'Socrates'
Dont remember much about it. An alien of sone kind, mostly mouth with sharp teeth and i think tentacles of some kind. It came from another dimension through a home satelite dish and starts killing people. Not much to go on i know. If anyone has an idea id appreciate it.
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Did you know that in the 1980s movie PREDATOR the titular character was not originally portrayed by Kevin Peter Hall. It was in fact Jean-Claude Van Damme donning a much more insect inspired full body suit before he left the production which then led to the recasting and redesigning of the famous hunter.