The antenna theory is intriguing but always bugged me. Where do we get that idea that consciousness lives outside the body/brain? Where did it come from?
I would say it is, you shouldn't make unsubstantiated claims based on gaps in our shared knowledge, that's very unscientific. Just because we don't understand something very well, doesn't mean we can just attribute other unexplained phenomena to it.
As for quantum effects in the brain being responsible for consciousness, there is very good reason to think it is false, no matter how much Penrose insists.