Turnpike Hill turned out to be a tight little estate of 1970s semis, built on steep ground. Every TV aerial pointed towards the rifle range a few kilometres away.

Clearly the transmitter site had been named after the target area rather than the site’s actual location.

The reason for the relay was clear: the only main stations that could be received with good quality on Turnpike Hill were French ones.

On the way to the rifle range I noticed that once we left Turnpike Hill there were no other aerials pointing towards the relay. The ‘rifle range’ turned out to be a serious military facility, with lots of barbed wire and threatening notices. All very uptight in fact, and the transmitter station was behind the wire, so the NGR was correct after all. 

David Neale:
The site is a very lower power relay which covers a tiny area to the back of the town of Hythe and Saltwood. This area known as Turnpike cannot get a signal from Dover as the group of hills that drop from the Upper area to sea level block it.

Seems this is one site where the rx antennas are mounted above the tx antenna.