I've discussed this on the tx-list, but while busy getting lost on the A470 I spotted this chap.

The two aerials are about 100m apart along the road, and on opposing sides. The receive looks to be Afon Dyfi (and looks to be on a rotten post too, judging by the angle, but thats another matter!) The transmit grid is about 100m up the road, but I couldn't see any repeaters or joins. Its a vertical grid, which as far as I can see serves one house about 20m away.

Why not just take the signal straight into the house? The site also has no OfCom note that we can find. The plot thickens. Anyone any ideas?