Okay, I was going to let this slide after your first reply, aptsys, but seeing as you're pushing it again after Winston's reply then I think it needs addressing.
That's not quite true. Log periodics do not have high gain so aren't suited to everywhere. Where they benefit is directivity and front to back ratio because each element acts as a reflector for the element in front of it, so ideal for areas with lots of transmitters nearby. They certainly aren't the universal antenna you suggest.
A yagi-uda high gain antenna is always a better choice for poorer signal areas.
So, let's take it from the top. The OP is non-technical. Like many people who ask questions here, yjones is non-technical. Proof, if needed, comes from the comment that he(?) thought Freeview comes via a satellite signal. That's absolutely fine. The forum is here to help all. What it does mean is that we try to avoid over-techy answers, particularly ones where there's insufficient info from the OP to go making big assumptions.
Now let's look at the detail of your first reply after mine.
"
That's not quite true. Log periodics do not have high gain so aren't suited to everywhere. " I didn't write that Log Periodics have high gain. Sorry, but that's you making an unfounded assumption. Nor did I say that they're suitable everywhere. That's another assumption on your part.
"
Where they benefit is directivity and front to back ratio because each element acts as a reflector for the element in front of it, so ideal for areas with lots of transmitters nearby. " No argument here on that point. However, problems with multiple transmitters wasn't raised as a specific issue in the OP, and it's not the sole advantage of Logs.
Their relatively flat gain curve also makes them suitable for transmission areas that are undergoing a shuffling of the frequencies. In my own TV region (Granada) we've seen the Winter Hill transmitter frequencies go from being bunched at the upper end of the range to now being spread right the way through from c31 to c59. However, you are correct about the multiple transmitter advantage, even though it's not (as yet) relevant to the OP's enquiry. Incidentally, they also help with impulse noise, but again. that's not directly relevant either.
"They certainly aren't the universal antenna you suggest. " Again, another assumption on your part, I'm afraid. I never said they were universally suitable.
I was simply suggesting an aerial type with a lower wind loading that the large aerial currently fitted to yjones' home. Can you think of a TV aerial that is widely available and that has a lower wind loading than a Log?
It's nice to show off a bit of knowledge, and in the right circumstances it is very much welcomed. At the same time though we have to be careful not to alienate the OP or frighten them off with irrelevant debate. Very often they're just looking for a simple answer to what they see as a simple question.
Our job here isn't really to show-boat, but to gently guide those making enquiries to a better understanding of what they have and to help them appreciate the implications of their choices. All contributions that help achieve that are welcomed. I don't recall seeing you as a regular contributor to this forum but do notice that you're active on the heating and electrical forums. I hope to see more of you here if you have the time.
Best regards
Lucid