Chain Home, Chain Home Low, Chain Home Extra Low, ROTOR and tropo-scatter stations
Notes: Some of the
Chain Home Low sites were co-located with the larger Chain Home radars.
Chain Home Extra Low equipment was co-located with "Chain Home" and "Chain Home Low" as well as at separate sites, but were of a less permanent nature, usually with mobile equipment.
ROTOR was the post war Radar interception system created from existing radar installations. NARS, the
North Atlantic Radio System, was an extension of the US Distant Early Warning system tropo-scatter communications network.
ACE High provided long-range communications for
NATO. ==Overseas==