Tolsford Hill

Page last updated: 26/6/2018

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History

Tolsford Hill was originally established in 1959 to provide additional telephony circuits to France with capacity for television transmission in either direction. Initially connections within the UK were by cable - a full SHF link to London via Fairseat and Flimwell was added in the late 1960s. At one stage the BBC operated ad-hoc SHF links between Tolsford Hill and London.

Originally a 200 ft mast was used - the concrete blocks for the stays can still be seen around the perimeter of the site. The building was based on a standard telephone exhange/repeater station design. A new concrete tower was built in 1970 alongside the original building, which remains in use. This allowed additional capacity and replaced a temporary structure which had been used to carry the link to London via Flimwell.

By the early 1980s concern about the capacity and resilence of the link resulted in plans for a second route running from London via North Kent and Dover to Boulogne. A cross-link was provided between Tolsford Hill and Archers Court and some spare/emergency capacity may have been available by late 1982. The new route was fully operational from around 1986.

In addition to the cross-channel EBU ("Eurovision") link Tolsford Hill carried circuits to feed the nearby ITA Dover transmitter and local studios. The BBC station at Swingate apparently was fed via the London to Tolsford Hill cable at times when the EBU did not require the circuit however arrangements were subsequently made for the BBC to provide its own SHF feed.

The site is now used for the mobile phone networks and local point-to-point links. A DAB transmitter was added in 2016.

Photos

1959

Tolsford Hill 1959

Copyright BT Heritage

The original installation comprised three 10 ft dishes facing towards France. Just visible behind the top dish is what appears to be a TV aerial presumably intended to receive the BBC service from Crystal Palace. The group of four tubes about half way down the mast are understood to be for a "supervisory" link operating at around 400 MHz. Below this are a group of dipoles, purpose unknown.

Tolsford Hill 1969

Copyright BT Heritage

By 1969 the link via Flimwell was operational however the associated dishes were mounted on a separate tower (left) behind the building. There is one change on the mast - a single dish has been added facing inland. This is likely to have been an interim arrangement to link back to Fairseat or some other intermediate point.

Tolsford Hill 2009

Copyright Nick Smith (Geograph)

This concrete tower was constructed around 1970 but by the time of Nick's photo the main cross-channel links had moved to fibre optic cables. The dishes were mounted on the vertical steel rails and therefore could be placed at any height. This view corresponds to the original 1959 photo above, dishes on this side would face France and those on the opposite "long" face would link to Flimwell.

The original mast would have been just to the right of the concrete "bridge" to the base of the new tower. The building was also extended but the section on the right is part of the original.