Foxhall Towers (Source: Steve from geograph.org.uk via Wikimedia Commons)

(Source: Southgate ARC)

John Norman writes in the East Anglia Daily Times about the Foxhall transmission site just outside Ipswich which played a key role in WW2 and the Cold War

Getting a coded signal back to the States, both during the Second World War and the Cold War, proved incredibly difficult. The solution was Operation Tea Bag: a scheme to connect telephone switching stations from across Europe, as far south as Italy, to Foxhall for forward transmission across the Atlantic.

Read the article at
https://www.eadt.co.uk/news/ipswich-icons-when-the-cold-war-was-played-out-right-on-our-doorsteps-in-suffolk-1-4947730