It is an open array and it turns fine but I don't get any targets. If I crank the gain up it gets a snowy but I don't get a target reflection. I took the array off several times and tried to see if it was emitting a signal (using a fluorescent light bulb right at the opening of the wave guide) but I didn't see much... I will take it to an electronics guru next week and see if we can track it down. Never had any trouble with it prior...and all the connectections are good and clean.
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